Mechanical Fourier analysis (transform)!

Mechanical Fourier analysis (transform)!  I've only read about, and seen photos of, these machines that were invented by Albert Michelson, the physicist most famous for his measurements of the speed of light.  These machines were manufactured into the early part of the 20th century. 

The video is a bit of a tease, as it's only the introductory video for a series of six – the rest of which will be released over the next couple of months.  It does show a little bit of the machine in operation, though.  It also gives you a bit of background and history if you're not familiar with Michelson's machine...