Albert Michelson’s Harmonic Analyzer

A machine that uses gears, springs and levers to add sines and cosines. A nineteenth century mechanical computer that performed Fourier analysis by using gears, springs and levers to calculate with sines and cosines—an astonishing feat in an age before electronic computers. Check out the series companion book and learn how to get a free PDF of the entire book at http://www.engineerguy.com/fourier.

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