art wrote:
We all know that when a generator produces alternating electricity,
it produces it with a rotational movement only. At no time does the
generater move backwards and forwards.


Hate to rain on the parade, but a fully function generator can be built
using exclusivley forward and backward motion. No rotation needed.

The simplest commercial application of this is the "Faraday Flashlight,
which charges a supercapacitor by strictly linear back and forth
movement of it's generator.

Even a loudspeaker is a linear generator.

see:

http://en.wikipedia.org/wiki/Faraday_Flashlight


- 73 d eMike N3LI -