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Levitating barbecue and chandelier by electromagnetic induction

Levitating barbecue and chandelier by electromagnetic induction

(3:46) Probably the best demonstration of Faraday's law of electromagnetic induction. Palais de la Decouverte, Paris.

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Guest: (1887 days ago)
Don't you mean gennius?
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Don't you mean gennius?
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cengland0 cengland0 (1887 days ago)
Can someone explain why aluminum will levitate? It's a non-ferrous material so wouldn't it act like a piece of wood or glass? None of those materials are supposed to be affected by magnetism. Could it be that the plate is not pure aluminum and is an alloy containing some iron?
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Can someone explain why aluminum will levitate? It's a non-ferrous material so wouldn't it act like a piece of wood or glass? None of those materials are supposed to be affected by magnetism. Could it be that the plate is not pure aluminum and is an alloy containing some iron?
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Guest: TinTin (1887 days ago)
Watch from 2.15. The aluminium plate acts as a coil and has an AC current going through it. The current produces a magnetic field which repels the field in the apparatus underneath. You could do this with any material that conducts electricity, it doesn't need to be ferrous
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Watch from 2.15. The aluminium plate acts as a coil and has an AC current going through it. The current produces a magnetic field which repels the field in the apparatus underneath. You could do this with any material that conducts electricity, it doesn't need to be ferrous
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cengland0 cengland0 (1880 days ago)
Latest comment: Sorry but I still don't understand. What I see is a nearly flat piece of aluminum and that cannot act as a coil. By definition, a coil is a length of something wound or arranged in a spiral or sequence of rings. Also, at 2:15, no A/C current is going through it. It's possible that the coil underneath is generating a magnetic force that is alternating and it's known that you can convert electricity to magnetism and vice versa but there is no direct electricity going through it. Perhaps if it was radio waves, that could be considered electricity but that's not what they called it. They said electromagnetic induction. Technically to be electromagnetic induction, the conductor must move through the magnetic field and the conductor is stationary until the device is turned on.
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Latest comment: Sorry but I still don't understand. What I see is a nearly flat piece of aluminum and that cannot act as a coil. By definition, a coil is a length of something wound or arranged in a spiral or sequence of rings. Also, at 2:15, no A/C current is going through it. It's possible that the coil underneath is generating a magnetic force that is alternating and it's known that you can convert electricity to magnetism and vice versa but there is no direct electricity going through it. Perhaps if it was radio waves, that could be considered electricity but that's not what they called it. They said electromagnetic induction. Technically to be electromagnetic induction, the conductor must move through the magnetic field and the conductor is stationary until the device is turned on.
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Guest: (1887 days ago)
LOL at 50 seconds. Which genius typed that?
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LOL at 50 seconds. Which genius typed that?
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