| Titre : | Using the Thomson Jumping Ring to Study the Effect of Eddy Currents and Skin Depth on Ring Jump Height (2021) |
| Auteurs : | Patrick McCaughin ; Lyle Ford |
| Type de document : | Article |
| Dans : | The Physics Teacher (6/59, Septembre 2021) |
| Article en page(s) : | p. 459-461 |
| Langues: | Anglais |
| Descripteurs : |
HE Vinci Courant électrique ; Démonstration ; Induction magnétique ; MagnétismeAutres descripteurs Foucault |
| Résumé : | Since its debut in Elihu Thomson’s 1886 article “Novel Phenomena of Alternating Currents,” the Thomson jumping ring apparatus has been a popular and captivating demonstration of magnetic induction. The components are quite simple. There is a solenoid, an iron core, and a ring. The demonstration usually begins with the professor saying something along the lines of, “An alternating current introduced to the solenoid will create a changing magnetic field, which induces a current in the ring in such a way to oppose the changing flux of the magnetic field responsible for the creation of the ring current. This will make the ring jump!” The professor then turns a switch, the ring is instantaneously launched into the air, and a classroom of students is amazed. The behavior of the demonstration is then attributed Lenz’s law and the lecture moves on. |
| Disponible en ligne : | Non |
Exemplaires (1)
| Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|
| The Physics Teacher. 6/59 (Septembre 2021) | Périodique papier | Louvain-la-Neuve | Etagère des revues | Prêt autorisé Disponible |
