Post #2551118
2026-05-14 14:42 UTC
Today is a good day for me as #physics professor because I made a final experiment working in the class, a simple yet seminal one (by Michael Faraday, 1831!) which I so far replicated only in partial ways.
It gave the theoretical basis for our modern technology, from power generators to the wifi transmission of power and signals (i.e. telecommunications).
Let me show it 3 steps:
1. The #Faraday induction I usually show: a moving strong magnets induces a tiny tension in a secondary coil.
Replies (1)
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@franco_vazza@mastodon.social 2026-05-14 14:45
This is the classical way in which I've always showed the experiment, even if with a self-made coil with less windings. This perfectly shows the Faraday induction law, however not in the way Faraday discovered it as he was using not such a strong magnet, but a primary coil with currents, instead. (it is good however to see such a clear induction here, because this primary coil has approximately N=10,000 windings, and the effect scales with N).