Levitating Barbecue! Electromagnetic Induction
At the Palais de la Decouverte in Paris, they showed me this experiment where a 1kg aluminium plate is levitated above a large coil of wire that is being supplied with 800A of alternating current...
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Let's switch it on. Let's see what it does.Through this coil of thick wire, we're about to pass a huge alternating electric current.On top is a 1 kg aluminium plate.So we hear that noise. What's that noise?It's the vibration of the plate, because it's vibrating at two times the frequency of thisone.Woah!Woooaaaahhhhhhh!!hahaha, how does it do that?It's magicalTo find out, I've come to the place where it all started - The Royal Institution inLondonThis is the key to Faraday's magnetic lab.It's amazing that the lock still works.From the 1870's on this became a store room, which is why it survived and it survived intact,all the joinery giant electromagnet are exactly the same as F...
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Let's switch it on. Let's see what it does.Through this coil of thick wire, we're about to pass a huge alternating electric current.On top is a 1 kg aluminium plate.So we hear that noise. What's that noise?It's the vibration of the plate, because it's vibrating at two times the frequency of thisone.Woah!Woooaaaahhhhhhh!!hahaha, how does it do that?It's magicalTo find out, I've come to the place where it all started - The Royal Institution inLondonThis is the key to Faraday's magnetic lab.It's amazing that the lock still works.From the 1870's on this became a store room, which is why it survived and it survived intact,all the joinery giant electromagnet are exactly the same as F...
