Your shopping cart is empty
| ||||||||||||||||||
[194] Series of experimentsAuthor: Florent Coulon, Besancon, France, florent.coulon@manipelec.com Stunning and educational experiments for pupils | ||||||||||||||||||
Mr. Coulon is a teacher at the grammar school E. Belin de Vesoul. He regularly conducts magnet experiments with his students. Some of them he captured on video. The first two videos demonstrate the strong adhesive force of our largest disc magnet.
In video 3 and 4, Mr. Coulon experimented with two large copper discs and supermagnets (disc magnet and block magnet Q-40-20-10-N); here the Faraday Induction Law can be illustrated. Have fun watching and doing it yourself - but always wear thick gloves like Mr. Coulon!
The physical explanation for this remarkable deceleration is the Faraday Induction Law: Dropping the magnet causes a B-field flow change in the conductor board (copper in this case). That induces circular currents in the conductor (Foucault currents, green in the graph). The induced currents in turn produce a magnetic field, which is opposite of the falling magnet (Lenz's Law), which slows it down.
The same effect can also be seen in the fourth video: The Foucault currents induced in the copper discs cushion the moving speed of the magnet that is dropped in between.
| ||||||||||||||||||
| ||||||||||||||||||
| Online since: 10/03/2009, Number of Visits: 32086 | ||||||||||||||||||
Have you found an interesting use for our SuperMagnets? Send us a description! If we publish it on our website, you will receive a SuperMagnete voucher with a value of CHF 50. Further Information
The copyright for the complete contents of this website (text, photos, videos, documents, etc.) lies with the author or with supermagnete.com. The contents of this website may neither be copied nor otherwise used without our explicit permission.