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 at 900Hz. This is by far the best demonstration of electromagnetic induction I have ever seen.

Back in London, I visited the magnetic lab of Michael Faraday in the basement of the Royal Institution. It was here that he did his groundbreaking work on induction. People had previously observed that current in a wire causes a compass needle to deflect, but more exciting was the prospect of using a magnetic field to generate current. Faraday created his famous induction ring by winding two coils of insulated wire onto an iron ring. When he connected a battery to one coil, a small pulse of current was induced in the other. When the battery was disconnected, current was induced in the other direction. This led Faraday to the conclusion that current was induced in the second coil only when the magnetic field through it was changing.

And if they hadn't been wrapped on the same ring, Faraday may have noticed that the two coils repel each other when the current is induced due to the interaction of their magnetic fields. This is the same thing that is happening with the aluminium plate, except we're using alternating current to create a continually changing magnetic field. This induces an alternating current in the plate, producing an opposing magnetic field which levitates the disk.

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[mistahjro]

ITS TIME TO START THE FLYING CARS =D



[BladeOfTheWolf]

is it possible to use this in the future for electromagnetic levitating vehicles ?

[Glen T]

Asbestos cause health problems? Who knew?

[DavidFowlerMusic]

It's POSSIBLE, but it would require this copper wire to be layed along ALL driving surfaces, which would TAKE tremendous power. It seems unlikely that levitating vehicles will ever be a thing. Cool as they are, they aren't economically advantageous.

[IxxHATExxBUFFERING]

All hail the SCIENCE DOUGHNUT!

[Tonaz Pérez]

The amount of energy required to lift a simple 1 Kg is 800A at 900 HZ. The common small car weights about 1 ton = 1000 Kg. Lets just assume the energy required grows in a linear manner (I really dont know if it does) it would require a massive amount of energy to be lifted, and.. the whole car would be really hot... if it's not already melting, it would cook anyone inside.

[diamanti cartone]

it's look like microwave device and maybe it is,if you put a lamp in microwave it will flash

[xpallodoc]

he says aluminium like an ass hole

[Eliphas Leary]

It stops being a cool dinner table centerpiece as soon as a guest forgot to remove his/her piercings...

[Stefano Sergio]

Can you do a video on radiation

[geenvideomaker]

you would have really hot cars

[Cameron Rodriguez]

HAHAHA!! at 24 seconds...He just came. lol. made me laugh so hard.

no offence though, I love your videos and watch them all. :)