http://en.wikipedia.org/wiki/Wind_turbine
Petroleum pipes
http://en.wikipedia.org/wiki/Impulse_(physics)
Shoe sole cleaner
Automaton
Curing press
Uniform heat distribution stove plate
Current waveform
Safety coupling
Solar panel steering mechanism
Autonomous micro array
Manufacturing robot
http://en.wikipedia.org/wiki/Optoelectronics
http://en.wikipedia.org/wiki/Internal_combustion_engine
http://en.wikipedia.org/wiki/Gear_shift
