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Ajouter le résultat dans votre panierRobust Triboelectric Charging of Identical Balloons of Different Radii / Francisco Vera in The Physics Teacher, 04/60 (Avril 2022)
Titre : Robust Triboelectric Charging of Identical Balloons of Different Radii Type de document : Article Auteurs : Francisco Vera, Auteur ; Rodrigo Rivera, Auteur ; Manuel Ortiz, Auteur ; Francisco Antonio Horta-Rangel, Auteur Année de publication : 2022 Article en page(s) : p.246-247 Langues : Anglais (eng) Descripteurs : HE Vinci
Electricite ; Electrostatique ; Expérience scientifiqueRésumé : Electrification by rubbing different materials is a well-known phenomenon with a history that began more than five centuries B.C. ago. However, simple experiments can lead to contradictory or inconsistent results, and the history of this phenomena is plagued with non-intuitive results. For example, triboelectric charging by rubbing identical materials is possible. In this work we want to highlight some historical aspects of triboelectricity that could enrich the discussion of electrostatics in an undergraduate physics course. We will focus on the effect of strain on the triboelectric properties of a sample, which we think is not well known to physics teachers. We will show that it is possible to obtain robust polarities by rubbing identical rubber balloons of different radii and we will also show that this charging method can be very useful in introductory physics courses. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297583
in The Physics Teacher > 04/60 (Avril 2022) . - p.246-247[article]Exemplaires (1)
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Titre : Sterile Neutrinos: Are They Real? Type de document : Article Auteurs : B. Eberly, Auteur ; D. Lincoln, Auteur Année de publication : 2022 Article en page(s) : p.256-257 Langues : Anglais (eng) Descripteurs : HE Vinci
Observation ; Particule élémentaireRésumé : Neutrinos are perhaps the least understood of the known denizens of the subatomic world. They have nearly no mass, interact only via the weak nuclear force and gravity, and, perhaps most surprising, the three known species of neutrinos can transform from one variant into another. This transformation, called neutrino oscillation, has been demonstrated only relatively recently and has led to speculation that there might be another, even more mysterious, neutrino variant, called the sterile neutrino. While the sterile neutrino remains a hypothetical particle, it is an interesting one and searches for it are a key research focus of the world’s neutrino scientist community. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297584
in The Physics Teacher > 04/60 (Avril 2022) . - p.256-257[article]Exemplaires (1)
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Titre : Co-deriving the Formulas for Centripetal Acceleration and Mass-Spring Period Type de document : Article Auteurs : Mark Eichenlaub, Auteur Année de publication : 2022 Article en page(s) : p.258-259 Langues : Anglais (eng) Descripteurs : HE Vinci
AccélérationMots-clés : accélération centripède Résumé : There is a close connection between simple harmonic motion and uniform circular motion. This connection is widely taught and included in standard textbooks. Here, we exploit this connection to simultaneously derive two results from introductory mechanics: the period of a mass- spring system and the centripetal acceleration formula.Previously published derivations of the centripetal acceleration formula often rely on calculus, either via explicit computation or arguing geometrically about limits. One approach relies entirely on the kinematics of vectors, without invoking limits. Our approach likewise does not use limits, but is rooted in dynamics. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297585
in The Physics Teacher > 04/60 (Avril 2022) . - p.258-259[article]Exemplaires (1)
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Titre : Our Shifting Understandings of Culturally Relevant Pedagogy in Physics Type de document : Article Auteurs : Mathis Clausell, Auteur ; Sherry Southerland, Auteur Année de publication : 2022 Article en page(s) : p.260-265 Langues : Anglais (eng) Descripteurs : HE Vinci
Enseignement ; Étudiants ; Physique ; Sociologie de l'étudiantRésumé : In this paper, we describe the work of a teacher (Sarah) as she attempted to use culturally relevant pedagogy in her physics classroom. Culturally relevant pedagogy (CRP) is an approach to teaching developed by Gloria Ladson-Billings, with the goal of encouraging learning through drawing on students’ cultural capital as a centerpiece of their instruction. CRP meets the academic and cultural needs of diverse students through recognizing and building upon their cultural backgrounds, experiences, and interests in instruction. We describe how our experience working with Sarah broadened and honed our original understanding of CRP as we documented Sarah’s instructional successes, as well as the challenges, she encountered in her physics teaching. Based on our work with Sarah, we provide recommendations to inform other physics teachers as they attempt to employ CRP. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297586
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Titre : Free Software Resources for Teaching AC RC Circuits Type de document : Article Auteurs : Minjoon Kouh, Auteur Année de publication : 2022 Article en page(s) : p.266-269 Langues : Anglais (eng) Descripteurs : HE Vinci
Enseignement ; Logiciel ; PhysiqueRésumé : The importance of introducing computational approaches early and actively in science education is widely acknowledged among educators and scientists. Many great ideas have been put forward and implemented by advocates and organizations such as Partnership for Integration of Computation into Undergraduate Physics (https://www.compadre.org/PICUP) and the Science Education Resource Center at Carleton College (https://serc.carleton.edu/teaching_computation/index.html). According to “Phys21: Preparing Physics Students for 21st-Century Careers,” a recent report by the Joint Task Force on Undergraduate Physics Programs, physics students benefit from learning how to represent physics concepts in multiple ways: mathematically, experimentally, and computationally. In his best-selling book on career advice, Cal Newport argues that quickly and effectively learning how to wield difficult tools is a valuable skill for success. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297587
in The Physics Teacher > 04/60 (Avril 2022) . - p.266-269[article]Exemplaires (1)
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Titre : Video Analysis of an Oscillating Cantilever for Introductory Laboratories Type de document : Article Auteurs : Blane Baker, Auteur ; Maggie Sherer, Auteur ; Ben Mossinghoff, Auteur ; Will Laycock, Auteur Année de publication : 2022 Article en page(s) : p.270-272 Langues : Anglais (eng) Descripteurs : HE Vinci
Élasticité ; Oscillation ; VidéoRésumé : A wood cantilever of length ∼2.5 m is driven into resonance using the hand as a simple driver. Video recordings of these oscillations are analyzed to determine experimental second harmonic (n = 2) damped resonance frequencies. These frequencies are compared to theoretical ones, obtained from measurements of elastic moduli, damping properties, and physical dimensions of the cantilever. Experimental frequencies agree with theoretical ones to within their respective uncertainties. Experiments described here can be incorporated seamlessly into introductory college physics laboratories, following discussions of simple harmonic oscillators (including damping). These kinds of experiments are useful for developing students’ skills in designing and troubleshooting experiments, analyzing video recordings, and modeling data using computers. The ease of set up and simple apparatus also make these activities ideal for remote learning such as during the recent COVID-19 pandemic. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297588
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Titre : Using a Smartphone Pressure Sensor as Pitot Tube Speedometer Type de document : Article Auteurs : Dominik Dorsel, Auteur ; Sebastian Staacks, Auteur ; Heidrun Heinke, Auteur ; Christoph Stampfer, Auteur Année de publication : 2022 Article en page(s) : p.273-275 Langues : Anglais (eng) Descripteurs : HE Vinci
Baromètre ; GSM ; Instrument de mesure ; Pression ; ThermodynamiqueRésumé : As smartphones have become a part of our everyday life, their sensors have successfully been used to allow data acquisition with these readily available devices in a variety of different smartphone-based school experiments. Such experiments most commonly take advantage of the accelerometer and gyroscope. A less frequently used sensor in smartphone-based experiments is the pressure sensor or barometer. Pressure sensors in smartphones can improve indoor navigation, for example in multi-story shopping malls. In a popular smartphone experiment, the barometer is used to determine the current altitude in an elevator with the barometric height formula. Along with accelerometer data and by deriving the height data to calculate the velocity, z(t), v(t), and a(t) plots can be generated and shown to students in real time. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297589
in The Physics Teacher > 04/60 (Avril 2022) . - p.273-275[article]Exemplaires (1)
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Titre : Effectively Illustrating Nature’s Magic with Magic Type de document : Article Auteurs : F. D. Becchetti, Auteur Année de publication : 2022 Article en page(s) : p.276-281 Langues : Anglais (eng) Descripteurs : HE Vinci
Didactique des sciences ; Enseignement des sciences ; MagieRésumé : There is an ongoing challenge with STEM education: making physics, math, and science, in general, interesting, understandable, and retentive for college science and non-science majors, K-12 students, and the public. If not imparting detailed knowledge, at least one would like to introduce important concepts that will be remembered, appreciated, and hopefully would be pursued in more detail by audience members. One solution: as noted by Socrates, “Wisdom begins in wonder.” Indeed, magic as a form of wonderment dates back to Socrates and even earlier. One of the first magic books, The Discoverie of Witchcraft by Reginald Scot, was published in 1584, predating publication of many science texts. In this paper the author, based on recent research, advocates using special forms of magic to both amaze and teach, and in particular to illustrate the wonders of modern physics, i.e., Nature’s magic, but with connections also to classical physics. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297597
in The Physics Teacher > 04/60 (Avril 2022) . - p.276-281[article]Exemplaires (1)
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Titre : Design of a Compact Camera Obscura Type de document : Article Auteurs : María Jesús Sánchez, Auteur ; Julia Gil, Auteur ; José Manuel Vaquero, Auteur Année de publication : 2022 Article en page(s) : p.282-283 Langues : Anglais (eng) Descripteurs : HE Vinci
Ephéméride ; Lumière du soleil ; PropriétéRésumé : The camera obscura is a well-known optical device in the form of a closed box with a hole in one of its walls through which light rays pass, forming an inverted image of the external objects on the opposite wall, as can be seen in Fig. 1(a). Despite the simplicity of its basic design, they have been widely used by scientists and artists. In particular, dark cameras have been used throughout history to measure Earth-Sun distance. To do this, ancient scientists used cameras of enormous dimensions to accurately measure the variations in the apparent diameter of the Sun that depend on the Earth-Sun distance. This is because the farther the light travels inside the camera, the larger the projected image will be [Fig. 1(b)]. In this work, the construction of a compact dark camera for educational purposes is presented so that, having reduced dimensions, it allows the images to be very large. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297598
in The Physics Teacher > 04/60 (Avril 2022) . - p.282-283[article]Exemplaires (1)
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Titre : An Arduino Investigation of the Temperature Dependence of the Speed of Sound in Air Type de document : Article Auteurs : Calin Galeriu, Auteur Année de publication : 2022 Article en page(s) : p.284-288 Langues : Anglais (eng) Descripteurs : HE Vinci
Circuit électronique ; Electronique ; Programmation ; Vitesse du sonRésumé : The determination of the speed of sound in air is a classical experiment, usually performed with a resonance tube apparatus. The measured value can be checked against Eq. (1), which describes the temperature dependence of the speed of sound in dry air. A modern implementation of this speed of sound investigation uses an Arduino Uno microcontroller board, an HC-SR04 ultrasonic distance sensor, and a DS18B20 temperature sensor. The distance sensor’s transmitter produces a burst of eight ultrasonic rectangular pulses that travel through the air, reflect on an object placed in front at a distance d, and then return to the sensor’s receiver after an echo time t. This Arduino investigation, unfortunately, is harder to perform than one might expect after a first reading of Ref. 1 or 2. In this article we discuss some sources of experimental errors that can complicate this laboratory activity, and we describe some important steps that must be included in the data collection and analysis procedure, in order to obtain successful results every time. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297599
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Titre : STEM Education of Kinematics and Dynamics Using Arduino Type de document : Article Auteurs : A Coban, Auteur ; M. Erol, Auteur Année de publication : 2022 Article en page(s) : p.289-291 Langues : Anglais (eng) Descripteurs : HE Vinci
Cinématique ; Dynamique ; Enseignement des sciences ; ProgrammationRésumé : Ever increasing technological progress opens novel opportunities concerning educational activities, and the ability to use the technology effectively is one of the 21st century’s most demanding skills. The Partnership Forum for 21st-Century Skills (P21) states that no organization can achieve satisfying results without using technology and therefore the use of technology particularly in schools should be at the highest level. Some novel teaching methods have recently emerged based on technological developments, such as STEM education, which is based on the integration of science, technology, engineering, and mathematics. In this study, the motion of a body connected to a pulley system is analyzed by using an Arduino microprocessor and also related mathematical equations. Arduino is a programming platform on which various electronic elements can be connected. There are various Arduino compatible sensors (sound, light, distance, temperature, etc.) that can be coded for their intended use. Due to its cost effectiveness, this technological instrument can be used as a measurement tool in many physics experiments. In this work, the time-varying data of the position of the moving object is determined using the HC-SR04 ultrasonic distance sensor (see Fig. 1). The HC-SR04 distance sensor can determine the distance of the obstacle from the sensor when the transmitted signal is reflected from an obstacle and returned to the sensor, and the Arduino IDE computer program is used to load the corresponding codes into the Arduino and to retrieve the incoming data. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297600
in The Physics Teacher > 04/60 (Avril 2022) . - p.289-291[article]Exemplaires (1)
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Titre : A Simple Moment of Inertia Measurement Type de document : Article Auteurs : Peter F. Hinrichsen, Auteur Année de publication : 2022 Article en page(s) : p.292-295 Langues : Anglais (eng) Descripteurs : HE Vinci
Inertie : physique ; Masse ; Mécanique ; VitesseRésumé : Modern MEMs gyros/accelerometers allow the angular velocity of pendula to be precisely measured and the angular acceleration to be calculated. For a compound pendulum, 𝐼p𝜃¨=−𝑚𝑔𝑎sin𝜃, where a is the distance of the center of mass from the pivot, so the moment of inertia Ip of the compound pendulum about the pivot can be simply derived as 𝐼p=−𝑚𝑔𝑎/𝜃¨(𝜃=𝜋/2) from measurements of the angular acceleration 𝜃¨(𝜃=𝜋/2) when the pendulum is horizontal. Then mga can be determined by measuring the force and lever arm required to maintain the pendulum in a horizontal position. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297601
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Titre : Investigating Students’ Experience of Instructional Videos with the UX Curve Method Type de document : Article Auteurs : Guangtian Zhu, Auteur ; Yi Ding, Auteur ; Qingwei Chen, Auteur ; Yuhan Huang, Auteur Année de publication : 2022 Article en page(s) : p.296-298 Langues : Anglais (eng) Descripteurs : HE Vinci
Analyse de données ; Collecte de données ; Enseignement des sciences ; Travaux pratiquesRésumé : Instructional videos are commonly used in both remote and in-campus curriculum. In order to investigate students’ experience when learning with online instructional videos, we adapted a method called “UX curve” from the user experience studies in industrial design. In this paper, we introduce the procedure and data processing method of using the UX curve method. We applied the UX curve method in a high school physics class while the students were watching an instructional video of kinematics. The results suggested that the UX curve method is practical, convenient, and effective in collecting students’ real-time experience. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297602
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Titre : Millikan Again Type de document : Article Auteurs : William M. Wehrbein, Auteur Année de publication : 2022 Article en page(s) : p.299-302 Langues : Anglais (eng) Descripteurs : HE Vinci
Enseignement des sciences ; Étudiants ; Expérience scientifique ; VidéoRésumé : Recognized as one of the most beautiful experiments of all time, the oil drop experiment performed by Robert Millikan and his graduate students (primarily Harvey Fletcher) is a standard in the repertoire of experiments performed by undergraduate physics students. However, “as a teaching lab it does not enjoy a good reputation for three reasons: eyestrain, tedium, and poor, unconvincing results.” Several have attempted to make this experiment more student-friendly by improving the optics and replacing the stopwatch with a computer, replacing the eye with a video camera, and utilizing video analysis tools. Currently available versions of the oil drop apparatus for high school and college students have incorporated a number of these features. On the other hand, others are ready to replace the experiment with interactive computer-based simulations. There is another alternative: Have students analyze pre-recorded videos of the Millikan experiment. Besides the “Millikan Movies” produced at the California State University at Chico, the collection “Physics: CINEMA CLASSICS” (“PCC”) contains the essential nuggets from a Physical Science Study Committee (PSSC) educational film made in 1959 sufficient to compute the elementary electric charge. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297603
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Paru le : 01/03/2022
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Ajouter le résultat dans votre panier
Titre : Share It, Don’t Split It : Can Equitable Group Work Improve Student Outcomes? Type de document : Article Auteurs : Danny Doucette ; Chandralekha Singh Année de publication : 2022 Article en page(s) : p. 166-168 Note générale : https://doi.org/10.1119/5.0033824 Langues : Anglais (eng) Descripteurs : HE Vinci
Apprentissage des sciences ; Efficacité ; Evaluation des apprentissages ; Laboratoires ; Physique ; Résultat scolaire ; Travail de groupeRésumé : Imagine two groups of students in your physics class or lab. In Group A, the students each take on a different task but invest an equal amount of time, energy, and effort in what they do. For example, one student might be the note-taker, while another operates the calculator, computer, or experimental apparatus, and a third keeps everyone on track and makes sure the group is completing assignments correctly. In Group B, on the other hand, the students divide up the work equitably, making sure that each group member participates in every aspect of the various types of work that need to be done. In this case, each student takes a turn operating the apparatus, records their own data, and does some of the analysis. Survey results that we analyzed show that students prefer to work in Group A, but that their physics interest and self-efficacy are boosted most by Group B-style work. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294013
in The Physics Teacher > 03/60 (Mars 2022) . - p. 166-168[article]Exemplaires (1)
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Titre : Would Usain Bolt Beat the Dinosaur Dilophosaurus Wetherilli in a 100-Meter Race ? Type de document : Article Auteurs : Scott A. Lee Année de publication : 2022 Article en page(s) : p. 169-171 Note générale : https://doi.org/10.1119/5.0041057 Langues : Anglais (eng) Descripteurs : HE Vinci
Accélération ; Calcul algébrique ; Cinématique ; Course à pied ; Dinosaure ; VitesseRésumé : Most physics courses begin with one-dimensional kinematics, which is usually restricted to the case of constant acceleration. Here we report a unique exercise for an introductory algebra-based physics course involving the running and non-constant acceleration of the theropod dinosaur Dilophosaurus wetherilli and the world-famous Jamaican sprinter Usain Bolt. Given the interest that most students have about dinosaurs (as well as Usain Bolt), students are excited to examine a hypothetical 100-meter race between Dilophosaurus and Usain Bolt. Since these students have not yet taken calculus, and as part of our effort to build computational skills in our students, numerical methods are used via a spreadsheet to calculate displacements and accelerations numerically from velocity data. This work includes a discussion of uncertainties. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294014
in The Physics Teacher > 03/60 (Mars 2022) . - p. 169-171[article]Exemplaires (1)
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Titre : Infusing Equity, Diversity, and Inclusion Throughout Our Physics Curriculum : (Re)defining What It Means to Be a Physicist Type de document : Article Auteurs : Martha-Elizabeth Baylor ; Jessica R. Hoehn ; Noah Finkelstein Année de publication : 2022 Article en page(s) : p. 172-175 Note générale : https://doi.org/10.1119/5.0032998 Langues : Anglais (eng) Descripteurs : HE Vinci
Diversité ; Enseignement des sciences ; Equité ; Inclusion ; PhysiqueRésumé : Increasingly, the physics community is attending to issues of equity, diversity, and inclusion (EDI), both in language and action. We are more publicly recognizing our individual responsibilities as physicists to address social injustice and systemic oppression. To this end, our physics classrooms are key levers for action. While we have made great strides in teaching traditional content and habits of mind useful in physics, if we expand our educational practices to more completely reflect the full range of what it means to be a physicist, we can make our classrooms more inclusive and equitable and support the needed diversification of our field. Ultimately how, and by whom, physics is enacted are part of the discipline itself and ought to be included in our teaching about the professional practices of physicists. We present two complementary approaches for broadening the focus of our classes, share models for enacting these in middle-division physics courses at two distinct institutional types, and provide evidence of positive impacts on students’ sense of identity and notions of what it means to be a physicist. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294016
in The Physics Teacher > 03/60 (Mars 2022) . - p. 172-175[article]Exemplaires (1)
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Titre : Jumping Off a Merry-Go-Round Type de document : Article Auteurs : Terrence Toepker Année de publication : 2022 Article en page(s) : p. 176-178 Note générale : https://doi.org/10.1119/5.0023995 Langues : Anglais (eng) Descripteurs : HE Vinci
Force de coriolis ; Physique ; Saut ; Théorème de PythagoreRésumé : How many vertical jumps does it take to jump off of a rotating merry-go-round (MGR)? The answer is hidden in the expression: rn = r0 (1 + β2)n/2. When you make a vertical jump on a train moving on a straight line at constant speed (inertial frame), you land on the same spot. Not so on a MGR! Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294017
in The Physics Teacher > 03/60 (Mars 2022) . - p. 176-178[article]Exemplaires (1)
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Titre : Providing Context for Identifying Effective Introductory Mechanics Courses Type de document : Article Auteurs : Jayson M. Nissen ; Ian Her Many Horses ; Ben Van Dusen ; Manher Jariwala ; Eleanor Close Année de publication : 2022 Article en page(s) : p. 179-182 Note générale : https://doi.org/10.1119/5.0023763 Langues : Anglais (eng) Descripteurs : HE Vinci
Enseignement des sciences ; Mécanique ; Méthode d'enseignement ; Physique ; RechercheRésumé : Research-based assessments (RBAs) measure how well a course achieves discipline-specific outcomes. Educators can use outcomes from RBAs to guide instructional choices and to request resources to implement and sustain instructional transformations. One challenge for using RBAs, however, is a lack of comparative data, particularly given the skew in the research literature toward calculus-based courses at highly selective institutions. In this article, we provide a large-scale dataset and several tools educators in introductory physics courses can use to inform how well their courses foster student conceptual understanding of Newtonian physics. The supplemental materials include this dataset and these tools. Educators and administrators will often target courses with high drop, withdrawal, and failure rates for transformations to student-centered instructional strategies. RBAs and the comparative tools presented herein allow educators to address critiques that the course transformations made the courses “easier” by showing that the transformed course supported physics learning compared to similar courses at other institutions. Educators can also use the tools to track course efficacy over time. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294018
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Titre : A Two-Tiered Strategy to Help Students Assess Their Answers to Physics Problems Type de document : Article Auteurs : Jeffrey Marx Année de publication : 2022 Article en page(s) : p. 183-186 Note générale : https://doi.org/10.1119/10.0009685 Langues : Anglais (eng) Descripteurs : HE Vinci
Evaluation des apprentissages ; Physique ; Résolution de problèmeRésumé : For years there has been an acknowledged interest in having students assess the rationality of their solutions to physics problems. In fact, many textbooks now routinely include end-of-problem assessments as part of the authors’ detailed solutions to examples. Over the past two decades, I have experimented with various forms of end-of-problem assessment strategies for my students in introductory, college-level physics classes. In this note, I will share my observations and recommendations for how this aspect of students’ solutions can be productive and valuable for them, while providing insights into the students’ understanding for the instructor. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294019
in The Physics Teacher > 03/60 (Mars 2022) . - p. 183-186[article]Exemplaires (1)
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Titre : Teaching Quantum Computing to High School Students Type de document : Article Auteurs : Ciaran Hughes ; Joshua Isaacson ; Jessica Turner ; Anastasia Perry ; Ranbel Sun Année de publication : 2022 Article en page(s) : p. 187-189 Note générale : https://doi.org/10.1119/10.0009686 Langues : Anglais (eng) Descripteurs : HE Vinci
Enseignement secondaire ; Informatique quantique ; PhysiqueRésumé : Quantum computing is a growing field at the intersection of physics and computer science. The goal of this article is to highlight a successfully trialled quantum computing course for high school students between the ages of 15 and 18 years old. This course was designed to bridge the gap between popular science articles and advanced undergraduate textbooks. Conceptual ideas in the text are reinforced with active learning techniques, such as interactive problem sets and simulation-based labs at various levels. The course is freely available for use and download under the Creative Commons “Attribution-NonCommercial-ShareAlike 4.0 International” license. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294020
in The Physics Teacher > 03/60 (Mars 2022) . - p. 187-189[article]Exemplaires (1)
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Titre : Using “Limits to Growth” Modeling Software in an Environmental Physical Science Lab Type de document : Article Auteurs : Hauke Busch Année de publication : 2022 Article en page(s) : p. 190-191 Note générale : https://doi.org/10.1119/5.0028078 Langues : Anglais (eng) Descripteurs : HE Vinci
Energie renouvelable ; Environnement ; Laboratoires ; Physique ; Réchauffement de la planèteRésumé : Although teaching of environmental physics and energy-related topics has increased in the last several years, only a small portion of that has been for non-science majors. Environmental physical science can be used to teach physics to non-science majors by applying learned physics concepts to current issues of interest such as climate change, population growth, sustainability, and renewable energy. The combination of the subject of the environment and a more student-centered learning environment improves the learning experience of the student. It increases the understanding non-science students have for physics. Teaching a physical science class with emphasis on the environment requires labs that engage the students. This lab, in particular, is intended as a final lab in the semester, which shows the students that all the environmental topics are intertwined and influence each other. It ties population growth, climate change, and resource use to show the effects they have on the economy, pollution, ecological footprint, and the welfare of humanity as a whole. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294021
in The Physics Teacher > 03/60 (Mars 2022) . - p. 190-191[article]Exemplaires (1)
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Titre : An Inquiry Approach to Effective Use of Instrumentation: An Example from RC Circuits Type de document : Article Auteurs : G. Harvey ; M. Gilday ; T. J. Kelly Année de publication : 2022 Article en page(s) : p. 192-194 Note générale : https://doi.org/10.1119/10.0009687 Langues : Anglais (eng) Descripteurs : HE Vinci
Electronique ; Expérience scientifique ; Instrument de mesure ; ModélisationRésumé : In this article, we present an intriguing experimental exercise that does not fall foul of improper use of instrumentation. The activity is designed as an electronics exercise where the role of the instruments in the measurement of the RC time constant is considered. Essentially, we study the accuracy and precision of a measurement of the RC time constant in a series circuit with an oscilloscope as a function of the value of the resistor, against the predicted linear model of τ = RC. As the value of the resistor approaches the value of the impedance of the oscilloscope, the time constant deviates from the linear model. We show how to adapt the model to account for this and create a mathematical model that agrees with the measurements. It is hoped that such an exercise will solidify a rule of effective use of oscilloscopes—that the resistance of the circuit should be much lower than the impedance of the scope—in the mind of the student. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294022
in The Physics Teacher > 03/60 (Mars 2022) . - p. 192-194[article]Exemplaires (1)
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Titre : A Skateboarding Experiential Learning Activity for Introductory Physics Type de document : Article Auteurs : Liang Zeng ; Guang Zeng ; Oscar Guerrero ; George Garcia Année de publication : 2022 Article en page(s) : p. 196-199 Note générale : https://doi.org/10.1119/10.0009688 Langues : Anglais (eng) Descripteurs : HE Vinci
Energie ; Expérience scientifique ; Physique ; SkateboardRésumé : Instructors of introductory college physics courses are in a unique position to explain the physics of skateboarding and its associated risks. A field trip to a skate park to explore the law of conservation of energy and measure the impact forces can enhance student analytical thinking skills and their appreciation of physics in everyday life. Through the measurement of the impact forces and student discussions of their own skateboarding experiences, students are better prepared to protect themselves from skateboarding-related physical injuries. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294023
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Titre : Measuring the Magnetic Field Vector of Earth Type de document : Article Auteurs : Leonid Minkin ; Daniel Sikes Année de publication : 2022 Article en page(s) : p. 200-201 Note générale : https://doi.org/10.1119/10.0009689 Langues : Anglais (eng) Descripteurs : HE Vinci
Champs magnétiques ; Planète TerreRésumé : The magnetic field of Earth, Be, is an intriguing topic in the introductory physics curriculum that engages students’ curiosity and inspires numerous speculations about the nature of this phenomenon. There are several methods for measuring Earth’s magnetic field. Probably, the most widespread and visual method of measuring the field in student lab experiments utilizes a tangent galvanometer. Recently, PASCO scientific suggested to use a magnetic field sensor for this goal, in a procedure where a magnetic field sensor combined with a rotary motion sensor is rotated in a 2-D plane containing the magnetic field vector of Earth. In this case, the magnetic field detected by the magnetic field sensor is a component of the magnetic field vector oriented relative to the direction of the magnetic field sensor probe (radial component of magnetic field). This means that the detected magnetic field considered as a function of the angle of rotation of the sensor will be a sinusoidal function. The amplitude of this function is the magnitude of Earth’s magnetic field. In conducting this experiment, initially the sensor is set to zero by placing it in a Zero Gauss Chamber (mu-metal). The equipment setup of the experiment is depicted in the figure shown in Ref. 9. The described experiment requires the use of a dip needle that is a compass pivoted to move in the plane containing the magnetic field vector of Earth. The dip needle shows the dip angle θ (inclination) that Earth’s magnetic field makes with the horizontal. Besides the previously mentioned devices, this experiment requires the use of an aluminum table clamp, adjustable angle clamp, and angle indicator to ensure proper alignment of the rotary motion sensor in a 2D plane containing the magnetic field vector. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294024
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Titre : Exploring Historical Scientific Instruments by Using Mobile Media Devices Type de document : Article Auteurs : Aurelio Agliolo Gallitto ; Onofrio Rosario Battaglia ; Giuseppe Cavallaro ; Giuseppe Lazzara ; Lorenzo Lisuzzo ; Claudio Fazio Année de publication : 2022 Article en page(s) : p. 202-206 Note générale : https://doi.org/10.1119/5.0032111 Langues : Anglais (eng) Descripteurs : HE Vinci
Interférence sonore ; SmartphoneRésumé : We describe an educational activity that can be completed with mobile media devices in order to understand the working principle of a pair of tuning forks, from the Historical Collection of Physics Instruments of the University of Palermo, and how they were used to explain acoustic interference and beats with the Lissajous optical method. This approach can be used with any tuning fork and it is a valuable teaching strategy that does not require specific laboratory equipment. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294025
in The Physics Teacher > 03/60 (Mars 2022) . - p. 202-206[article]Exemplaires (1)
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Titre : Demonstrating Mechanical Beats on Phosphorescent Foil in Real Time Type de document : Article Auteurs : Panagiotis Lazos ; Anastasios Nezis ; Nikolaos Kyriazopoulos Année de publication : 2022 Article en page(s) : p. 207-210 Note générale : https://doi.org/10.1119/10.0009690 Langues : Anglais (eng) Descripteurs : HE Vinci
Fréquence de résonance ; Instrument de musique ; MécaniqueRésumé : The interference pattern between two harmonic oscillations with slightly different frequencies are called beats. The beats, as a combined motion, have two different periods, one approximately equal to the period of the original oscillations, and another that is significantly longer and is related to the variable amplitude of the motion. The main objective of this presented work is to engage students’ attention and demonstrate in a simple way the concept of mechanical beats as a resultant motion of combined oscillations, but also to experience it through a visual projection. The proposed experimental setup is constructed in a way that satisfies both objectives and it consists of two parts that allow us to demonstrate in real time the combination of two harmonic motions. In the first part, the resultant motion is generated by the oscillations of two parallel rulers equipped with mirrors, and in the second part the visual demonstration of the beat occurs on a phosphorescent rotating foil by using a blue violet laser beam. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294027
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Titre : Understanding Aristotle’s Wheel Paradox from the Viewpoint of Motion Decomposition Type de document : Article Auteurs : Huiling Xu ; Xun-Wang Yan ; Yanyun Wang Année de publication : 2022 Article en page(s) : p. 212-214 Note générale : https://doi.org/10.1119/5.0055440 Langues : Anglais (eng) Descripteurs : HE Vinci
Aristote ; Histoire des sciences ; Mécanique ; Mouvement ; Paradoxe ; RoueRésumé : Aristotle’s wheel paradox is a fascinating example of a classical puzzle that can pique a student’s interest. The existing explanations in the literature are limited to discussions of the wheel trajectory; in this paper, we study the paradox from the viewpoint of motion decomposition, an approach we consider more intuitive. The motion of the point at the wheel edge can be resolved into a uniform rectilinear motion and a uniform circular motion. By analyzing the velocity of the point on the edge of the small wheel, we conclude that when the large wheel is rolling at a constant speed without slipping, the small wheel does actually both roll and slide. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294028
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Titre : Determining Gravitational Acceleration Accurately and Simply Type de document : Article Auteurs : Albino Rafael Pinto ; Carlos Saraiva Année de publication : 2022 Article en page(s) : p. 216-217 Note générale : https://doi.org/10.1119/5.0024027 Langues : Anglais (eng) Descripteurs : HE Vinci
Accélération ; Gravitation ; OndeRésumé : There are several ways in the literature to determine the value of gravitational acceleration. we will present a way that allows us to determine the we used an audio plug (3.5-mm jack) that can be reused from types of plugs can also be purchased and are very cheap. In this article, a computer speaker or microphone that are damaged. These value of gravitational acceleration very accurately using every-day materials. For this, we will use an electromagnet, a coil, a steel sphere, a speaker, an audio cable (3.5-mm jack), a direct current power supply, connecting wires, a computer, and the Audacity software. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294029
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Titre : New Measurements on the Faraday Generator and New Questions About Induction Type de document : Article Auteurs : Hermann Haertel Année de publication : 2022 Article en page(s) : p. 218-219 Note générale : https://doi.org/10.1119/5.0021904 Langues : Anglais (eng) Descripteurs : HE Vinci
Aimants ; Champs magnétiques ; Induction électromagnétique ; Loi de Faraday ; Physique ; Théorie des cordesRésumé : The question of how the processes around the Faraday generator with its rotating magnet should be interpreted has been controversial since its discovery by Faraday. Does the magnetic field rotate together with the rotating magnet or does it remain stationary? Furthermore, does one only need Faraday’s flux law to interpret inductive processes, or are there processes in which this law fails and a satisfactory explanation can only be found with the help of the Lorentz force? This question seemed to have been re-solved recently in favor of Faraday’s flux law, which has been described as a universal law that applies without exception to every conceivable case. The measurements presented here raise doubts as to the validity of this interpretation. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294030
in The Physics Teacher > 03/60 (Mars 2022) . - p. 218-219[article]Exemplaires (1)
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Titre : A Single Photo for Calibration and Measurement: A Low-Cost Spectrometry Setup Type de document : Article Auteurs : J. Pfaender ; L. M. Gratton ; T. Rosi ; P. Onorato ; M. Malgieri Année de publication : 2022 Article en page(s) : p. 220-222 Note générale : https://doi.org/10.1119/10.0009691 Langues : Anglais (eng) Descripteurs : HE Vinci
Analyse spectrale ; Astronomie ; Enseignement des sciences ; Etalonnage ; Interférométrie d'intensité ; Mécanique quantique ; Mesure ; Physique ; SpectromètreRésumé : In the last decades spectroscopy began to play an essential role in physics education research with the recognition that atomic spectra constitute a good occasion to study the concepts of quantum mechanics. Moreover, activities in which atomic spectra are studied in order to understand star structure and evolution have proved particularly engaging for students. In this sense, the hydrogen atom spectrum is especially important in astronomy. Other researchers showed how interdisciplinary experimental activities involving interferometry and applied optics offer a good occasion to teach fundamental concepts of radiation-matter interaction. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294031
in The Physics Teacher > 03/60 (Mars 2022) . - p. 220-222[article]Exemplaires (1)
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Titre : Comment on “Tilting Motion and the Moment of Inertia of the Smartphone” Type de document : Article Auteurs : Peter F. Hinrichsen Année de publication : 2022 Article en page(s) : p. 223-225 Note générale : https://doi.org/10.1119/5.0061475 Langues : Anglais (eng) Descripteurs : HE Vinci
Conservation ; Energie ; Inertie : physique ; Mouvement ; Pendule ; SmartphoneRésumé : The measurement of the moment of inertia of a smartphone using the internal MEMS gyro to record its angular velocity as it topples over from rest in a vertical position ϑ (0) ≈ 0 to a horizontal landing has been described by Kaps and Stallmach (see Fig. 1). The analysis of this experiment is presented in terms of the conservation of energy, with the implicit assumptions that the edge of the smartphone does not slip. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294033
in The Physics Teacher > 03/60 (Mars 2022) . - p. 223-225[article]Exemplaires (1)
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Titre : Looking Up: Observational Astronomy for Everyone Type de document : Article Auteurs : Michael Noble Farney Année de publication : 2022 Article en page(s) : p. 226-228 Note générale : https://doi.org/10.1119/5.0019979 Langues : Anglais (eng) Descripteurs : HE Vinci
Astronomie ; Enseignement des sciences ; Microscope ; Observation ; Réfraction ; TéléscopeRésumé : Physics teachers are sometimes asked to teach an astronomy course for non-majors. One can’t make that class dance and sing without the starry night, but on a brightly lit campus viewing deep sky objects may seem impossible. Hence instructors often opt for planetarium shows. However: 1) Planetariums aren’t the real thing. 2) People living in large swaths of the United States cannot access one. Nevertheless, thanks to binoculars and small wide-field telescopes, those who teach the heavens can provide both show and substance under light-polluted skies. This article presents a dozen “pitfalls” to avoid. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294034
in The Physics Teacher > 03/60 (Mars 2022) . - p. 226-228[article]Exemplaires (1)
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Titre : Astronomy activities for promoting scientific evaluation Type de document : Article Auteurs : Janelle M. Bailey ; Doug Lombardi Année de publication : 2022 Article en page(s) : p. 230-231 Note générale : https://doi.org/10.1119/10.0009695 Langues : Anglais (eng) Descripteurs : HE Vinci
Astronomie ; Origine de l'univers ; PhysiqueRésumé : We have developed activities to engage students in evaluating competing scientific models. Ford identified evaluation as a critical aspect of doing science, and it sits at the crux of the K-12 Framework and NGSS’s Science and Engineering Practices. Scientific evaluation often involves both the evaluation of the connections between evidence and the explanation and the evaluation of competing explanations. But how do we get students to engage with this process? Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294036
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Titre : Demonstrating birefringence using a smartphone camera Type de document : Article Auteurs : Chokchai Puttharugsa ; Patamas Bintachitt ; Surawut Wicharn ; Suwan Plaipichit Année de publication : 2022 Article en page(s) : p. 232-233 Note générale : https://doi.org/10.1119/10.0009696 Langues : Anglais (eng) Descripteurs : HE Vinci
Optique et photonique ; Réfraction ; Smartphone ; VidéoRésumé : Birefringent materials, such as calcite and quartz, are so named because they have two refractive indices. In this article we demonstrate how the optical properties of birefringent materials may be observed and photographed. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294040
in The Physics Teacher > 03/60 (Mars 2022) . - p. 232-233[article]Exemplaires (1)
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Titre : The hand boiler and how it does not work Type de document : Article Auteurs : James Lincoln Année de publication : 2022 Article en page(s) : p. 234-235 Note générale : https://doi.org/10.1119/10.0009697 Langues : Anglais (eng) Descripteurs : HE Vinci
Chaleur ; Démonstration ; Enseignement des sciences ; Expérience scientifique ; PhysiqueRésumé : The hand boiler is an intriguing physics demonstration that is perfectly suited to the high school classroom. The ubiquity of this device, and the many incorrect explanations of its workings, motivate this author to write and explain its physics correctly. In this article I explain how the hand boiler works and provide supporting experiments that refute the incorrect explanations. Also included are a few well-tested hands-on activities for students and teachers to enjoy. Examples of the hand boiler are shown in Fig. 1. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294041
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Titre : Getting schooled in physics the hard way: A long journey to an inclusive pedagogy Type de document : Article Auteurs : Mare Sullivan Année de publication : 2022 Article en page(s) : p. 236-237 Note générale : https://doi.org/10.1119/10.0009698 Langues : Anglais (eng) Descripteurs : HE Vinci
Enseignement des sciences ; Pédagogie inclusive ; Physique ; Récits personnelsRésumé : Physics courses—and the lack of physics courses—had a huge impact on my academic career. I attended a high school that transitioned from coed to all girls during my freshman year. With the change, four things disappeared: boys, football, calculus, and physics. Three years later, when I applied to universities, two of my four applications were rejected. I was not qualified to apply, because I had not completed a physics course. As I sat in college Physics 1 on the first day of class, the professor asked us to raise our hands if we had not studied physics in high school. I raised my hand. Suddenly, panic struck me as I realized that not one of the other 400+ mostly male students had raised a hand. In that class I learned that physics teaching means direct lecture, notetaking, and occasional entertaining demonstrations. Not a good fit for a social woman from a very poor family in the East Los Angeles area. Working half time precluded joining study groups, so my struggle to learn physics was difficult and lonely. I succeeded primarily by sheer stubbornness and fear of failure. How I wish I had had fellow travelers on my path. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=294042
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Titre : When the Quarter Jumps into a Cup (and When It Does Not) Type de document : Article Auteurs : Mateo Dutra ; Alvaro Suarez ; Martin Monteiro ; Arturo Carlos Marti Année de publication : 2022 Article en page(s) : p. 87 Note générale : https://doi.org/10.1119/5.0031589 Langues : Anglais (eng) Descripteurs : HE Vinci
Démonstration ; Dynamique des fluides ; Loi binomiale ; Newton, Isaac ; Physique ; Pression ; Probabilité ; VitesseRésumé : While Bernoulli’s equation is one of the most frequently mentioned topics in physics literature and other means of dissemination, it is also one of the least understood. Oddly enough, in the wonderful book Turning the World Inside Out, Robert Ehrlich proposes a demonstration that consists of blowing a quarter coin into a cup, incorrectly explained using Bernoulli’s equation. In the present work, we have adapted the demonstration to show situations in which the coin jumps into the cup and others in which it does not, proving that the explanation presented in Ehrlich’s book based on Bernoulli’s equation is flawed. Our demonstration is useful to tackle the common misconception, stemming from the incorrect use of this equation, that higher velocity invariably means lower pressure. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292589
in The Physics Teacher > 02/60 (Février 2022) . - p. 87[article]Exemplaires (1)
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Titre : Experiments with mobile devices — A retrospective on 10 years of iPhysicsLabs Type de document : Article Auteurs : Jochen Kuhn ; Patrik Vogt Année de publication : 2022 Article en page(s) : p. 88-89 Note générale : https://doi.org/10.1119/10.0009416 Langues : Anglais (eng) Descripteurs : HE Vinci
Expérience scientifique ; Physique ; SimulationRésumé : The TPT column “iPhysicsLabs,” which describes an experiment using mobile devices in each article, has been around for exactly 10 years now. We would like to take this anniversary as an opportunity to take stock and to thank the colleagues without whom the column would not be possible in this form. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292591
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Titre : Talking Is Thinking: Supporting Student Sense-Making Through Discourse and Assessment Type de document : Article Auteurs : Whitney Jackson ; Lauren A. Simpson ; Brooke A. Whitworth Année de publication : 2022 Article en page(s) : p. 90-93 Note générale : https://doi.org/10.1119/5.0021977 Langues : Anglais (eng) Descripteurs : HE Vinci
Apprentissage des sciences ; Discussion ; Evaluation ; Métacognition ; Physique ; RéflexionRésumé : Learning in the classroom is highly influenced by the experiences a teacher plans for students. Concerned that students were not achieving adequate conceptual knowledge during traditional undergraduate physics courses, the authors used the Making Sense of SCIENCE curriculum to tailor a course for 21 pre-service elementary teachers at the University of Mississippi. The organization of instruction, facilitation practices, discussion opportunities, and assessment of content are all important aspects of the learning process. We found the changes we implemented significantly impacted the learning of students enrolled in this course. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292592
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Titre : Understanding the Law of Conservation of Momentum in One-Dimensional Collisions Between Two Objects Using the Velocity Space Approach Type de document : Article Auteurs : Kin Son Wong ; Hang Wong Année de publication : 2022 Article en page(s) : p. 94-96 Note générale : https://doi.org/10.1119/5.0024603 Langues : Anglais (eng) Descripteurs : HE Vinci
Energie cinétique ; Loi physique ; Mécanique ; Mouvement ; VitesseRésumé : The law of conservation of momentum is a fundamental law of nature. It states that the momentum of an isolated system is conserved. In high school or introductory-level physics courses, for simplicity, teachers and textbooks always use collisions in one dimension as the examples to introduce the concept of conservation of momentum. To solve simple problems involving one-dimensional collisions, all we need are basic algebraic manipulations. However, the relation between physical quantities, such as mass and the changes in velocity and kinetic energy, of the colliding objects is not obvious. For instance, if an object A collides with a stationary object B, what is the direction of A after the collision? Is it possible that the final velocity of A is zero in an inelastic collision? In this paper, we argue that the so-called velocity space approach can be highly effective for physics teachers in building a better understanding of the law of conservation of momentum.
ReferencesDisponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292593
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Titre : Making the Quantum Scattering of Fundamental Particles Accessible Type de document : Article Auteurs : James Day ; Theresa Yu-Huan Liao ; Char Hoyt ; Oguzhan Can Année de publication : 2022 Article en page(s) : p. 97-99 Note générale : https://doi.org/10.1119/5.0021481 Langues : Anglais (eng) Descripteurs : HE Vinci
Dessin ; Diagramme ; Electron ; Particule élémentaire ; Photons ; Physique quantiqueMots-clés : General physics Curriculum Careers and professions Educator Subatomic and elementary particles Feynman diagrams Learning and learning models Physicists Teaching Students Résumé : This paper shares a hands-on activity that introduces Feynman diagrams and the accompanying idea of using pictorial representations to describe the behavior of subatomic particles—specifically, for electrons and photons—in place of mathematical expressions. Built collaboratively by scientists and artists, it exemplifies a triumph of lateral thinking by highlighting the vital role Feynman diagrams have played in modern physics. While the student may initially treat this activity as a glimpse into the quantum realm, the teacher should recognize this as a demonstration of lateral thinking as an insight tool. Disponible en ligne : Oui En ligne : https://aapt.scitation.org/doi/full/10.1119/5.0021481 Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292594
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Titre : Solar Eclipse and Cosmic Ray Flux Type de document : Article Auteurs : Tamar A. Dallal ; Jacob M. Miller ; Michelle Matten ; Ezra Schur ; Allen J. Sears ; Clarissa Carr ; Jacob Rosenberg ; Nathan A. Unterman ; Anthony Valsamis ; Mark Adams Année de publication : 2022 Article en page(s) : p. 100-104 Note générale : https://doi.org/10.1119/10.0009417 Langues : Anglais (eng) Descripteurs : HE Vinci
Champs magnétiques ; Eclipse (astronomie) ; Rayonnement cosmique ; Soleil (astronomie)Résumé : During the August 21, 2017, solar eclipse, high school students measured secondary cosmic ray flux using QuarkNet detectors. These students conducted experiments examining cosmic ray flux, shower, speed of muons, and muon lifetime using QuarkNet cosmic ray muon detectors (CRMDs). These detectors measure muon flux of momenta greater than ~2 GeV, a threshold imposed by deflection due to Earth’s magnetic field. This study utilized CRMDs, which are readily available for students, to investigate any deviation in secondary cosmic ray flux resulting from a solar eclipse. Other groups have conducted experiments regarding cosmic rays during eclipses: Kandemir et al. reported on low-energy muons (under 1 GeV) during the eclipse of August 11, 1999; Nayak et al. and Bhaskar et al. studied air showers for gamma ray point sources; and Nishina et al. studied muon flux during a 1936 eclipse. Cosmic rays are charged particles created in exploding stars and active galaxies and travel through interplanetary space at relativistic velocities. The flux is largely unchanged between day and night, when Earth blocks the Sun, and the presence of the Sun and Moon has little effect. A total eclipse provides a dramatic opportunity to search for that fraction of cosmic rays created by the Sun that are intercepted by the Moon. We hypothesized that muon flux will change during a total solar eclipse; however, we designed the experiment to search for signals at various angular scales near the direction of the Sun and to set upper limits on production from the Sun if no signal was observed.
AcknowledgmentsDisponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292595
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Titre : Measuring the Speed of Earth Around the Sun Using a Classroom-Built Radio Horn Telescope Type de document : Article Auteurs : Thaddeus Herman Année de publication : 2022 Article en page(s) : p. 105-109 Note générale : https://doi.org/10.1119/5.0025845 Langues : Anglais (eng) Descripteurs : HE Vinci
Astronomie ; Effet doppler ; Planète Terre ; Soleil (astronomie) ; Téléscope ; Vitesse ; Voie lactéeRésumé : Even though many physics teachers take their students on a calculation adventure through circular motion and Newton’s universal law of gravity to determine Earth’s velocity, most of us leave it at that. We present the final result and say, “Look, Earth is moving around the Sun at about 107,000 km/hr (66,000 mph), yet we can’t feel the motion at all!” Well, thanks to an NSF-funded Research Experience for Teachers, some eager participants, a simply built radio horn telescope pointed at the center of the Milky Way, and the addition of Doppler effect considerations, we can verify our calculations through observation… science! Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292596
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Titre : Beyond the Classroom: Profiling Muon Flux in Relation to Overburden in Fermilab’s MINOS Tunnel Type de document : Article Auteurs : Eleanor Anne Winkler ; Paul Graham ; Nathan A. Unterman ; Benjamin Grey ; Jacob M. Miller ; Max J. Miller ; Allen J. Sears ; Alex Bernat ; Shoshana Frank ; Joshua Simon ; Shira K. Eliaser ; Tom Blackmore ; Emmanuelle Copeland ; Marybeth Senser ; Henry Seiden ; Anthony Valsamis ; Mark Adams Année de publication : 2022 Article en page(s) : p. 110-113 Note générale : https://doi.org/10.1119/5.0025659 Langues : Anglais (eng) Descripteurs : HE Vinci
Particule élémentaire ; Physique ; Rayonnement cosmiqueRésumé : With support from QuarkNet, high school students investigated the effect of overburden on muon flux by collecting data from Fermilab’s Main Injector Neutrino Oscillation Search (MINOS) tunnel. Muon flux varied due to a change in overburden created by a 103-meter deep access shaft. A profile of muon flux as a function of distance from the access shaft was measured by observing muon flux from different locations within the tunnel. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292598
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Titre : Measurement of the Velocity of Sound Through Resonance in Air Columns as a Homemade Experiment Type de document : Article Auteurs : Zeyu Jason Niu ; Duanbin Luo Année de publication : 2022 Article en page(s) : p. 114-116 Note générale : https://doi.org/10.1119/5.0023835 Langues : Anglais (eng) Descripteurs : HE Vinci
Acoustique ; Enseignement des sciences ; Mécanique ; Optique et photonique ; Physique ; Smartphone ; Vitesse du sonRésumé : In recent years, with the more powerful functions of smartphones, the use of sensors integrated by mobile phones as an auxiliary tool for physical experiment teaching has become more popular. Combined with the related mobile phone apps, people easily can develop and expand the physical experiment contents of mechanics, optics, acoustic phenomena, and so on. These experiments not only help students master the relevant laws of physics, but also permit or encourage students to carry out experimental research, greatly increase students’ interest in learning, and meet the training requirements of the Next Generation Science Standards. Recently, some experiments about measurement of speed of sound have been introduced. It is amazing and interesting that people can use simple tools to measure the speed of sound. This kind of experiment is very helpful to improve students’ practical ability in experiment design, data acquisition, and analysis. Inspired by the above experiments, especially the Kundt’s tube experiment, we demonstrate the acoustic resonance in an air column using a plastic tube, a mobile phone, a loudspeaker, and a tape measure. Through the resonance phenomenon of an air column, the speed of sound in air can be calculated conveniently. The experimental results are in good agreement with the reference value. This kind of homemade experiment can provide guidance for students to carry out relevant research in a non-laboratory environment. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292600
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Titre : Spectral Analysis of Musical Notes as a Source of Information About Musical Instruments Type de document : Article Auteurs : Oleksii Voronkin Année de publication : 2022 Article en page(s) : p. 117-122 Note générale : https://doi.org/10.1119/10.0009418 Langues : Anglais (eng) Descripteurs : HE Vinci
Instrument de musique ; Logiciel ; MusiqueRésumé : The integration of physics, music, and mathematics has long been used to increase students’ interest and motivation in these subjects. For example, previous articles in this journal have shown how to teach physical concepts in a musical context, use a smartphone to check the resonant frequencies of whistles, use a smartphone to examine the spectra of sounds, and apply Fourier analysis to the study of musical intervals. This article is devoted to the audio recordings analysis of saxophone sounds, violin, guitar, piano, hand bell, and ocarina in the Audacity editor. The purpose of this analysis is to determine the amplitude-frequency structures of musical notes and obtain information for the classroom about the physical characteristics of musical instruments and some playing techniques. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292601
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Titre : Temporal Change of a Parallel Plate Capacitor’s Voltage after Dielectric Insertion Type de document : Article Auteurs : Youngmin Oh ; Taehun Jang ; Hyejin Ha ; Sangho Sohn Année de publication : 2022 Article en page(s) : p. 124-127 Note générale : https://doi.org/10.1119/10.0009419 Langues : Anglais (eng) Descripteurs : HE Vinci
Circuit électrique ; Condensateur ; Energie électrique ; Matériau ; PolymèresRésumé : The capacitor is a device that can store an electric charge and has a structure with two insulated electrode plates. When a voltage is applied to the capacitor, electric charge accumulates on the plates; current flows during the charge accumulation but does not flow when the charge accumulation is complete. Dielectric inserts are made from a substance that generates a dielectric polarization when an electric field is applied to them. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292602
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Titre : Sign and Sense of an Induced Electric Current by a Nearby Moving Magnet Type de document : Article Auteurs : Roberto Rojas Année de publication : 2022 Article en page(s) : p. 128-129 Note générale : https://doi.org/10.1119/10.0009420 Langues : Anglais (eng) Descripteurs : HE Vinci
Aimants ; Courant électrique ; Electromagnétisme ; Enseignement des sciences ; Loi de FaradayRésumé : In one of the Faraday’s experiments an electric current is induced in a conducting loop when a magnet in front of it moves towards or away from the loop. While the direction of circulation of the electric current in the loop has only two options, it depends on three experimental conditions that generate eight cases. Even though the Faraday law or the Lenz law by itself answers for the current sense in each case, we think that a graphic synthesis of all the cases and its corresponding result is a new and interesting exercise we want to discuss. The resulting diagram is a starting point for other exercises on the induced current that a teacher might propose to their students in introductory college physics. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292603
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Titre : Dynamic Applets for Teaching Physics Type de document : Article Auteurs : Thomas Lingefjärd ; Guner Ahmet Année de publication : 2022 Article en page(s) : p. 130-133 Note générale : https://doi.org/10.1119/10.0009421 Langues : Anglais (eng) Descripteurs : HE Vinci
Electronique ; Enseignement des sciences ; Mathématiques ; Modélisation ; PhysiqueRésumé : The subject of mathematics is important for many other subjects, including physics. The questions we ask in physics often need a mathematical translation to be graphically interpreted and transformed. Students learn physics when interacting with physical questions; questions from physics also give insights and discoveries in mathematical problems. In physics we often deal with questions that benefit from being illustrated with mathematical tools. A scientific theory (in physics or in another science) is an isomorphism between physical reality and a mathematical model. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292604
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Titre : How to Use the Archimedes Paradox for Educational Purposes Type de document : Article Auteurs : Armand Le Noxaïc ; Kamil Fadel Année de publication : 2022 Article en page(s) : p. 137-139 Note générale : https://doi.org/10.1119/10.0009424 Langues : Anglais (eng) Descripteurs : HE Vinci
Archimède ; Dynamomètre pour la mesure de la force musculaire ; Fluide ; ParadoxeRésumé : The statics of fluids may seem simple at first but often poses problems for students when it comes to applying it to concrete cases. Despite its relatively simple laws, some subtleties, mainly related to the elastic characteristics of a fluid, must be noted. This elasticity allows the pressure exerted in a part of the fluid to propagate in its entirety, a non-intuitive concept for students as they consider more readily solid objects. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292606
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Titre : A Quantitative Experiment of Liquid Dispersion Using Merely a Partially Submerged Mirror and Sunlight Type de document : Article Auteurs : Cristiano M. B. Cordeiro ; Eric Fujiwara Année de publication : 2022 Article en page(s) : p. 140-143 Note générale : https://doi.org/10.1119/5.0022815 Langues : Anglais (eng) Descripteurs : HE Vinci
Liquide ; Miroir ; Optique et photonique ; Réfraction ; Soleil (astronomie)Résumé : The refractive index (RI) is probably the single most important parameter in optical systems. Chromatic dispersion, on the other hand, indicates how the RI depends on the wavelength and is central in, e.g., optical communication systems. Chromatic dispersion also plays an important role when teaching optics due to the captivating natural phenomenon of the rainbow and the white light decomposition with a prism. In this work, we propose and explore a method to characterize the refractive index of transparent liquids in the visible range without any dedicated equipment or device (such as prisms, goniometer, laser, detector, etc.). Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292607
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Titre : Polarimetry Measurement in a Physics Lab for Food Science Undergraduate Students Type de document : Article Auteurs : Ivan Cescon ; Alberto Stefanel Année de publication : 2022 Article en page(s) : p. 144-148 Note générale : https://doi.org/10.1119/10.0009425 Langues : Anglais (eng) Descripteurs : HE Vinci
Expérience scientifique ; Glucides ; Lumière ; Optique et photonique ; PolarisationRésumé : This paper presents a series of experiments that focus on light polarization and polarimetry. Such experiments were conducted with the use of commercial Polaroids, light sensors, and laser pointers, and were designed for an undergraduate food science students physics lab. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292608
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Titre : Apparent retrograde motions of planets Type de document : Article Auteurs : Christopher Sirola Année de publication : 2022 Article en page(s) : p. 150-151 Note générale : https://doi.org/10.1119/10.0009427 Langues : Anglais (eng) Descripteurs : HE Vinci
Astronomie ; Enseignement à distance ; Mécanique ; Mouvement ; PlanèteRésumé : Thanks to the COVID-19 pandemic, virtually all in-person instruction was shut down across the country in 2020 and beyond. This posed special problems for laboratory-based science courses, as those are defined by the conducting of experiments in person and often with specialized equipment unavailable outside of the classroom. Here I discuss a semester-long project for introductory astronomy that can be performed at home with very basic and inexpensive equipment. And, thanks to the vagaries of the orbits of the planets, variations of this activity can be carried out in many future semesters. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292610
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Titre : Performing acoustics experiments using inexpensive Bluetooth speakers and smartphone signal generator applications Type de document : Article Auteurs : Chris Chiaverina Année de publication : 2022 Article en page(s) : p. 152-153 Note générale : https://doi.org/10.1119/10.0009430 Langues : Anglais (eng) Descripteurs : HE Vinci
Acoustique ; Applications mobiles ; bluetooth ; SmartphoneRésumé : The acoustic experiments discussed here are by no means novel; some can be traced back to the 18th century. What may be new to readers is the use of small, low-cost Bluetooth speakers and signal generator applications (apps) to perform them (Fig. 1). Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292611
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Titre : A Physics Story: Literacy technique for learning the language of physics Type de document : Article Auteurs : James Lincoln, Auteur ; Daniel Murrell, Illustrateur Année de publication : 2022 Article en page(s) : p. 154-155 Note générale : https://doi.org/10.1119/10.0009431 Langues : Anglais (eng) Descripteurs : HE Vinci
Enseignement des sciences ; Littératie ; Physique ; Vocabulaire scientifiqueRésumé : When I began teaching high school physics, I found that many of my students were not just struggling with the mathematics of physics but the way the language was used. Physics is sometimes discussed as being a second language where common words are coded with specific alternate definitions (consider how you use the word “delta”). Furthermore, many of our students are English Language Learners. Thus, providing developmentally appropriate assistance to building scientific vocabulary not only addresses equity issues but can be a highly effective teaching strategy. In this article, I provide an example of one such approach to addressing literacy issues: a vocabulary building story on Convection, Conduction, and Radiation. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292613
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Titre : Reflecting on a difficult year Type de document : Article Auteurs : Deepak Iyer ; Shannon Wachowski Année de publication : 2022 Article en page(s) : p. 156-157 Note générale : https://doi.org/10.1119/10.0009433 Langues : Anglais (eng) Descripteurs : HE Vinci
COVID-19 ; Développement professionnel ; EnseignementRésumé : For this month’s article, we reflect on the impact of COVID and existing challenges in education that have become exacerbated over the past two years. We bring our own perspectives and experiences, and those from the broader communities we belong to. We hope that they will resonate with your thoughts, feelings, and experiences too. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292614
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Titre : Remembering Michael Collins Type de document : Article Auteurs : Gregory A. DiLisi, Auteur Année de publication : 2022 Article en page(s) : p.4-5 Langues : Anglais (eng) Descripteurs : HE Vinci
Astronaute ; Astronomie ; Biographie ; Lune ; Métier ; NASA (USA) ; ProfessionsMots-clés : SpacecraftssThe MoonNews and eventsAstronauts Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290335
in The Physics Teacher > 01/60 (Janvier 2022) . - p.4-5[article]Exemplaires (1)
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Titre : Physics in James Joyce’s Ulysses Type de document : Article Auteurs : Harry Manos, Auteur Année de publication : 2022 Article en page(s) : p.6-10 Langues : Anglais (eng) Descripteurs : HE Vinci
Programme d'études ; Publications ; UniversitésRésumé : Ulysses by James Joyce (1882–1941) has a surprising amount of 19th-century, classical physics. The physics community is familiar with the name James Joyce mainly through the word “quark” (onomatopoeic for the sound of a duck or seagull), which Murray Gell-Mann (1929-2019 – Physics Nobel Prize 1969) sourced from Joyce’s Finnegan’s Wake. Ulysses, however, was ranked number one in 1998 on the Modern Library “100 Best Novels” list and is, in whole or in part, in the literature curriculum in university English departments worldwide. The fact that Ulysses contains so much classical physics should not be surprising. Joyce’s friend Eugene Jolas observed: “the range of subjects he [Joyce] enjoyed discussing was a wide one … [including] certain sciences, particularly physics, geometry, and mathematics.” Knowing physics can enhance everyone’s understanding of this novel and enrich its entertainment value. Ulysses exemplifies what physics students (science and non-science majors) and physics teachers should realize, namely, physics and literature are not mutually exclusive.
REFERENCESDisponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290336
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Titre : The Sinking of the R.M.S. Titanic: A Case Study in Thermal Inversion and Atmospheric Refraction Phenomena Type de document : Article Auteurs : Gregory A. DiLisi, Auteur Année de publication : 2022 Article en page(s) : p.11-14 Langues : Anglais (eng) Descripteurs : HE Vinci
Chaleur ; Eau ; Instrument de mesure ; Océan ; Phénomènes optiques ; Sciences légales ; Transport maritimeRésumé : On April 14, 1912, the British passenger liner R.M.S. Titanic struck an iceberg. The ship sank in a fraction of the time designers had estimated following a worst case scenario. The purpose of this article is to examine the atmospheric refractive phenomena that might have played a significant role in obscuring the iceberg from Titanic’s two lookouts. We describe a way in which these phenomena can easily and inexpensively be brought to students in our introductory physics classrooms.
REFERENCESDisponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290337
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Titre : Pictures of Signs in Sea Waves Type de document : Article Auteurs : Nada Razpet, Auteur ; Tomaz Kranjc, Auteur Année de publication : 2022 Article en page(s) : p.15-17 Langues : Anglais (eng) Descripteurs : HE Vinci
Apprentissage par problèmes ; Eau ; Imagerie optique ; Vague ; Vision binoculaireRésumé : In nature, we often observe interesting phenomena for which we would like to find a physical explanation. One such phenomenon is presented in this paper. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290338
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Titre : Using Math in Physics: 5. Functional dependence Type de document : Article Auteurs : Edward Redish, Auteur Année de publication : 2022 Article en page(s) : p.18-21 Langues : Anglais (eng) Descripteurs : HE Vinci
Analyse mathématique ; Apprentissage par problèmes ; Epistémologie des sciences ; MathématiquesRésumé : When students are learning to use math in physics, one of the most important ideas they need to learn is that equations are not just calculational tools; they represent relationships between physical variables that change together (co-vary). How much a change in one variable or parameter is associated with a change in another depends on how they appear in the equation—their functional dependence. Understanding this sort of relationship is rarely emphasized in introductory mathematics classes, and students who have not yet learned to blend conceptual ideas with mathematical symbols may not see the relevance and power of this idea. We need to explicitly teach functional dependence as part of our effort to help students learn to use math productively in science Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290339
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Titre : Collision of a Happy Ball with an Unhappy Ball Type de document : Article Auteurs : Rod Cross, Auteur Année de publication : 2022 Article en page(s) : p.22-24 Langues : Anglais (eng) Descripteurs : HE Vinci
Energie ; VitesseRésumé : What happens when a perfectly elastic ball collides with a completely inelastic ball? It is shown that the outcome depends on the stiffness of each ball. A standard textbook problem in mechanics is to calculate the outcome of a head-on collision between two balls using conservation of momentum and kinetic energy. It is easily shown that the outcome depends on the relative mass of the balls and their initial speeds. In practice, there is always a net loss of kinetic energy during a collision, which can be expressed in terms of the coefficient of restitution (COR) for the collision. The COR is defined as the relative speed of the two balls after the collision divided by the relative speed before the collision. In a perfectly elastic collision the COR is unity. In a completely inelastic collision, the COR is zero. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290340
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Titre : Science Conferences: A Pathway for Enacting the NGSS Type de document : Article Auteurs : Brian M. Wargo, Auteur Année de publication : 2022 Article en page(s) : p.25-27 Langues : Anglais (eng) Descripteurs : HE Vinci
Apprentissage des sciences ; Congrès ou conférence ; Enseignement des sciences ; SciencesRésumé : The Next Generation Science Standards (NGSS) is the latest initiative to promote authentic scientific work in the classroom. Previous reform efforts have not caused the change in teacher practice and student learning that was hoped for, despite their ubiquity and accessibility. The culprit may be the culture of school that is often recalcitrant to change. This article argues that the NGSS may be the most scientifically aligned reform but may be doomed to failure unless it can be connected with the culture of schooling. The central idea offered here is to incorporate the professional practice espoused in the NGSS by using a cultural emblem of school science—the science fair. The trick is to transform the science fair into a science conference. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290341
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Titre : The Sound of a Laser Blaster: Acoustic Dispersion in Metal Springs Analyzed with Mobile Devices and Open-Source PC Audio Software Type de document : Article Auteurs : Kim Ludwig-Petsch, Auteur ; Michael Hirth, Auteur ; Jochen Kuhn, Auteur Année de publication : 2022 Article en page(s) : p.28-33 Langues : Anglais (eng) Descripteurs : HE Vinci
Acoustique ; Mesure acoustique ; OrdinateursRésumé : The typical sound of George Lucas’ laser blaster in the “Star Wars” series is well known. What does a laser blaster in “Star Wars” sound like, and why? Here we show a simple way to produce this sound by using low-cost lab material, like a spring or a Slinky (Fig. 1). Building on the work of Crawford, who analyzed the sound of a Slinky using oscilloscopes, we present a technique for analyzing the sound using mobile devices. For a deeper quantitative analysis, a PC with open-source software is used. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290342
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Titre : Arons at Amherst Type de document : Article Auteurs : Thomas B. Greenslade Jr., Auteur Année de publication : 2022 Article en page(s) : p.34-36 Langues : Anglais (eng) Descripteurs : HE Vinci
Cours magistral ; Histoire:Science ; UniversitésRésumé : This article is about a famous physics course taken by thousands of students at Amherst College in the 1950s, designed and taught by its distinguished instructor, Arnold B. Arons. There are very few of us left who have taken the course. The youngest one would be, as the course was discontinued in 1968, about 72 years old! Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290343
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Titre : Going “All Quantitative” While Teaching About Light and Stars in Introductory Astronomy Type de document : Article Auteurs : Michael LoPresto, Auteur Année de publication : 2022 Article en page(s) : p.37-39 Langues : Anglais (eng) Descripteurs : HE Vinci
Astronomie ; Rayonnements électromagnétiquesRésumé : When teaching a general education introductory astronomy course that includes a mathematics prerequisite, it is important to convey that formulas and equations physically represent properties of actual objects and processes that occur that can actually be observed. Students with varying comfort levels with mathematics often need to be convinced that problems involving formulas and equations are more than simply mathematical exercises, but are meant to enhance their understanding of the physical concepts. One way to attempt to do this is to introduce equations related to concepts that are being studied qualitatively, for instance, with lecture-tutorials. Here are several examples making use of lecture-tutorials on topics related to light and stars from the popular manual Lecture-Tutorials for Introductory Astronomy Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290344
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Titre : Steady-State Velocity of a Chain Falling from the Edge of a Table Type de document : Article Auteurs : Juan Rodriguez, Auteur ; Becky Tang, Auteur ; Marcos H. Martin, Auteur ; Adrin Irias, Auteur ; Amani Adel, Auteur ; Sebastian Zaldivar, Auteur ; Abel A. Carvajal, Auteur ; Camila Gallardo, Auteur ; Wojciech J. Walecki, Auteur Année de publication : 2022 Article en page(s) : p.40-42 Langues : Anglais (eng) Descripteurs : HE Vinci
Chutes accidentelles ; Cinématique ; Equation ; VitesseRésumé : We investigated a very long chain falling from the pile on the edge of a table to the floor both experimentally and theoretically. In this very simple and novel configuration we showed that the velocity of the chain quickly converges to its asymptotic value, and that the steady-state velocity is proportional to the square root of the height of the table. The results are general and do not depend on the type of chain. We explained our measurements using simple dimensional analysis and Newton’s second law. The measurements do not require any special instrumentation other than a stopwatch, a desk, and a chain. This experiment can be performed in any classroom. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290345
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Titre : Enriching Resource Rooms for Students with Learning Disabilities: A Case of Transparent, Semi-Transparent, and Non-Transparent Concepts Type de document : Article Auteurs : Sibel Er Nas, Auteur ; Hava Ipek Akbulut, Auteur ; Muammer Çalik, Auteur Année de publication : 2022 Article en page(s) : p.43-46 Langues : Anglais (eng) Descripteurs : HE Vinci
Pédagogie ; Savoir ; Troubles de l'apprentissageRésumé : The aim of this study is to illustrate how to enrich resource rooms with specialized instructional materials for the concepts of “transparent,” “semi-transparent,” and “non-transparent.” Given the special situations of students with learning disabilities, the specialized instructional materials use their own avatars to ensure a sense of belonging for each student to the study. In addition, they have the opportunity to follow the QR-coded experimental videos repeatedly, after performing hands-on experiments. Thus, the specialized instructional materials not only help them understand the concepts of transparent, semi-transparent and non-transparent but also develop their social skills. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290517
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Titre : Mission to Mars — Concept and Implementation of a Design-Based (Hands-On) Smartphone Experiment Helping Students Understand the Effects Caused by Differences in Air Pressure Type de document : Article Auteurs : Sebastian J. Spicker, Auteur ; Alexander Küpper, Auteur ; André Bresges, Auteur Année de publication : 2022 Article en page(s) : p.47-50 Langues : Anglais (eng) Descripteurs : HE Vinci
Applications mobiles ; Didactique des sciences ; Exploration de l'espace ; Mars ; Pression atmosphériqueRésumé : Physics is not a very popular subject at German schools, and several studies indicate that girls are less interested than boys in the traditional physics curriculum. To address this problem, physics education should be up to date, context oriented, interesting for girls and boys, and emerge from their everyday life. The ROSE study shows that astronomy, human biology, and space are interesting for boys and girls and therefore a suitable context for physics lessons. In the field of astronomy and space exploration, the research is both highly current and part of the students’ life, as they hear about discoveries and missions in the news. One possible future space mission is the human exploration of Mars. Such a trip is not easy; various factors have to be considered and risks must be minimized. One risk is the vacuum in space while there is higher air pressure in the spaceship itself. This aspect must be taken into account when designing a spaceship, for example, the “Crew Dragon” by Space X. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290518
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Titre : A Novel Method for Measurement of the Refractive Indices of Transparent Solid Media Using Laser Interferometry Type de document : Article Auteurs : Arnab Pal, Auteur ; Pradipta Panchadhyayee, Auteur ; Kriti R. Sahu, Auteur ; Debapriyo Syam, Auteur Année de publication : 2022 Article en page(s) : p.51-55 Langues : Anglais (eng) Descripteurs : HE Vinci
Lumière ; Optique et photonique ; RéfractionRésumé : The refractive index is a number that governs how light changes its direction of propagation as it enters one material medium from another. This phenomenon is known as refraction and the angles of incidence and refraction of light, referred to the normal to the interface of the two media at the point of incidence, are related by Snell’s law. The refractive index (RI) depends on the color (or wavelength λ) of light. Tables of values of refractive indices for various media and wavelengths of light, with respect to vacuum, are readily available. The refractive index of a material can be measured by many methods, for example, by using a spectrometer in conjunction with a prism made of the experimental substance. An important class of methods of measuring RI involves the formation of interference patterns. Interferometric measurements are concerned with the study of separation between bright fringes (or dark fringes) resulting from the superposition of light waves, originating from a single source and propagating along paths of different optical lengths (refractive index multiplied by geometric path length). Researchers have exploited (nearly) monochromatic light from laser sources to enhance precision in measuring refractive index by applying interferometric techniques. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290526
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Titre : Gaussian Formula for Ray Tracing in Lenses and Mirrors Type de document : Article Auteurs : Nuri Balta, Auteur Année de publication : 2022 Article en page(s) : p.56-57 Langues : Anglais (eng) Descripteurs : HE Vinci
Optique et photoniqueRésumé : In introductory texts, some “special” rays are selected to draw the image produced by lenses and mirrors. After teaching special rays, students usually ask how to draw an arbitrary ray. One method for drawing an arbitrary ray is the tilted principal axis. As an example, the tracing of an arbitrary ray in diverging lens is indicated in Fig. 1. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290527
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Titre : Two Accelerating Clocks: A Relativistic Thought Experiment Type de document : Article Auteurs : Adam Neat, Auteur Année de publication : 2022 Article en page(s) : p.58-61 Langues : Anglais (eng) Descripteurs : HE Vinci
Didactique ; Effet doppler ; Espace ; Relativité ; VitesseRésumé : Gravity bends light. One can argue this by reasoning that a beam of light should travel in a curved path when viewed from within an accelerating frame of reference, and then invoking Einstein’s principle of equivalence, which asserts that the effects observed in an accelerating frame of reference are indistinguishable from the effects observed in a uniform gravitational field. If light bends in an accelerating reference frame, it must also bend in a gravitational field. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290528
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Titre : Improving the Wilson Cloud Chamber Using Peltier Chips Type de document : Article Auteurs : Le Anh Duc, Auteur ; Nguyen Minh Duy, Auteur ; B. Nguyen Quoc, Auteur ; Tran Ngoc Chat, Auteur ; Nguyen Ngoc Hung, Auteur Année de publication : 2022 Article en page(s) : p.62-65 Langues : Anglais (eng) Descripteurs : HE Vinci
Effets des rayonnements ; Mesure ; Physique nucléaire ; RayonnementRésumé : The Wilson cloud chamber is an apparatus used for detecting and observing the trails of alpha/beta rays or even cosmic rays in saturated gas conditions. The principle of this device is based upon the powerful ionization of the aforementioned rays within the medium. This article will provide instruction for creating a classic version of the cloud chamber using a glass food container and dry ice. Some common malfunctions and disadvantages of the classic version will be discussed. Moreover, this article will introduce an improvement of the cloud chamber using the Peltier chip as an alternative for dry ice, and also compare the pros and cons of these two methods. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290529
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Titre : Sound Wave Propagation from Underdamped Free Oscillation of Metallic Cantilever Beams Type de document : Article Auteurs : Hendra Jaya Tarigan, Auteur Année de publication : 2022 Article en page(s) : p.66-69 Langues : Anglais (eng) Descripteurs : HE Vinci
Metal ; propagation ; Son (acoustique)Résumé : We describe here a low-cost experiment for introductory physics students where they compare the physical properties of aluminum and steel by means of cantilever oscillations. This, in turn, allows the students to improve their physical intuition about these materials. Further, the students can apply their physics and mathematics knowledge and skills to create an experiment-based physical model. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290530
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Titre : Investigation of the flux density of a solenoid using the magnetometer of smartphones Type de document : Article Auteurs : A. Kaps, Auteur ; Frank Stallmach, Auteur Année de publication : 2022 Article en page(s) : p.70-71 Langues : Anglais (eng) Descripteurs : HE Vinci
Didactique ; Electricite ; Magnétisme ; MesureRésumé : In physics lessons at secondary school and experimental physics courses at universities, the magnetic field inside a current-carrying solenoid is considered quantitatively. The corresponding equations and theories are supported by measuring the magnetic flux density inside the solenoid with a Hall probe. It has already been shown that smartphones with their internal magnetometer are suitable for quantitative investigations of magnetic fields. E.g., Silva proposed to wind a small coil on a pen and investigate the dependence of the stray field on the number of windings. Ogawara et al. placed a smartphone inside a current loop and studied the dependence of the flux density on current I. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290531
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Titre : Real astronomy data for anyone: Explore NASA’s IRSA Type de document : Article Auteurs : L. M. Rebull, Auteur Année de publication : 2022 Article en page(s) : p.72_73 Langues : Anglais (eng) Descripteurs : HE Vinci
Astronomie ; Bases de données comme sujet ; NASA (USA)Résumé : Many professional astronomy archives are open to the public; software tools are getting better all the time to not just access these data, but also work with them. The Infrared [IR] Science Archive (IRSA) is NASA’s home for long-wavelength data, both space- and ground-based. You can use this interface to pull data to create your own lessons, or turn students loose in the archive to discover features of our multi-wavelength universe. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290532
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Titre : Lab activities on temperature and thermodynamics Type de document : Article Auteurs : James Lincoln, Auteur Année de publication : 2022 Article en page(s) : p.74-75 Langues : Anglais (eng) Descripteurs : HE Vinci
Didactique ; Temperature ; ThermodynamiqueRésumé : ABSTRACT
spaceplay / pause qunload | stop ffullscreenshift + ←→slower / faster
↑↓volume mmute
←→seek . seek to previous12… 6 seek to 10%, 20% … 60%
In this article I introduce three lab activities, appropriate for a high school physics course, that are related to temperature and thermodynamics. The first of these is a graphing lab where a dual Fahrenheit-Celsius thermometer is used to create a best-fit trend line that serves to introduce this graphing skill. The second is an experiment to find the melting point of coconut oil, which is a convenient and widely available substance, with a phase change in a safe temperature range. The third is a safer alternative or follow-up to the classic “Burn a Peanut” lab, where I have students investigate how many calories are in a “heat pack” hand warmer. The labs are designed to be affordable, easy to set up, and work well as inquiry investigations.Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=290533
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