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Wednesday, February 5, 2014

Coils, Magnets, and Special Relativity (video)

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  1. I just love Minute Physics! Thanks, Bill.

  2. Interesting! If electron drift is only .0000000001% of the speed of light then it takes 3.5 + minutes for a charge to transit a one foot long wire? That accounts for my slow signals!
    How long is YOUR antenna?

  3. Ooops! Slip of the calculator! Just under a millisecond. But still much much too slow. Nearly a second for a thousand foot wire.

  4. Individual electrons take a surprisingly long time to move through wire (they are VERY small!)

  5. What moves rapidly is the ENERGY we are producing!


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