World's First Electric Generator


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World's First Electric Generator



Huge thanks to the Royal Institution, Professor Frank James, and Katie Atmore for filming.
For the Sixty Symbols version of this experiment click http://bit.ly/RGfLY5

Michael Faraday created the first electric generator in 1831 using a coil of wire and a permanent magnet. When the magnet was moved relative to the coil, current was induced in the coil. A similar experiment can be performed with a copper tube and a magnet. Although copper is not magnetic, it is a conductor. As the magnet falls through the pipe, the magnetic field changes over different sections of the pipe. This induces swirling currents (called eddy currents), which create a magetic field that opposes the motion of the magnet. This means work must be done to move the magnet through the pipe. This work generates the electrical energy, which is then dissipated as thermal energy in the pipe. The same basic principle is used to generate electricity throughout the world: moving a magnet inside copper coils.

Experiments A Cappella http://bit.ly/TtdflV
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The Coastline Paradox http://bit.ly/TIapxM
Microwave Grape Plasma http://bit.ly/QkCwUt

Music by Kevin McLeod (http://www.incompetech.com) Sneaky Snitch and Danse Macabre

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Veritasium

43 Comments

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  1. Ve element has an atomic weight of 42.0 which is only a tenth of 420
    and also happens to be the Answer to the Ultimate Question of Life, The Universe, and Everything. However, the answer seems meaningless because the beings who instructed deepthought never knew what the question was.
    watch 9 more Veritasium vids to meet your 420 quota.

  2. I wonder if you had a strong enough current running through the copper tube or engineered the copper a certain way…… could the magnet become suspended or be slowed down even more than the video illustrates.

  3. What will happen if we drop: radially oriented single pole, longer cylindrical-ring magnet in the cooper pipe?
    Whether the fall velocity, of the radially oriented single pole ring magnet, in the cooper pipe, will be faster, slower or same like the fall velocity of axially oriented cylindrical magnet, which is same longevity, diameter and intensity like previous one?
    Thank for your attention, and we hope that you will accept our suggestion to perform this experiment and show on YouTube.

  4. Always, In my mind, I roughly calculate the like/dislike ratio of the video I watched. And for this video, the ratio is pretty high (70). It's a weird habit, isn't it?