INTRODUCTION
The
electric standing fan was one of the most important electric inventions of all
time. The fan is a building block of other more advanced technologies. Fans are
necessary in computers, lasers, large LED (light emitting diode) lights, petrol
and electric automobiles, the space station and countless other things. The fan
as used in HVAC (Heating, Ventilation, and Air Condition) systems allows humans
to build giant or underground buildings. It would be hard to imagine a world
without the electric fan.
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