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

Office of Naval Research – Autonomous Swarm

The autonomous Swarm demonstration, sponsored by the Office of Naval Research, highlights a first-of-its-kind technology that gives naval warfighters a decisive edge through enabling unmanned Navy vessels to overwhelm an adversary. The demonstration took place on the James River in Virginia during the first two weeks of August, 2014.