Is it a possibility to send electricity through air over
a long distances and be able to use it when it is transferred? If so,
what does the machine look like that can do this or what it might look
like? Thank You.
Sort of. There is a way to induce an alternating current in a conductor
far away: by electromagnetic radiation. This, in fact, is how devices
such as radio and television operate. The broadcasting antenna sends out
radion waves, which are rapidly alternating electromagnetic fields. When
these fields contact a conducting material, such as the antenna in your
house, it sets up an electrical current which the radio or television then
translates into sound or a picture.
Richard E. Barrans Jr., Ph. D.
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Update: June 2012