Generators

In electricity generation, an electrical generator is a device that converts mechanical energy to electrical energy, generally using electromagnetic induction. The reverse conversion of electrical energy into mechanical energy is done by a motor, and motors and generators have many similarities. The source of mechanical energy may be a reciprocating or turbine steam engine, water falling through a turbine or waterwheel, an internal combustion engine, a wind turbine, a hand crank, the sun or solar energy, compressed air or any other source of mechanical energy.   http://en.wikipedia.org/wiki/Electrical_generator

This is my first attempt to generate electricity by spinning Neodymium Magnets within a magnet wire coil. I am using a rotary tool set on 15,000 RPM and generating up to 7 volts. I read that to power a light bulb with a homemade generator like this you needed to purchase a Radio Shack 25 milliwatt light bulb. I bought some and they shined brightly for about 4 seconds before burning out.

Neodymium Magnets are ideal for building wind powered generators.