Mesmerizing rebuild of a mechanical Fourier calculator

boing
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I wonder what the original writing instrument was…fountain pen or pencil?

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At last something genuinely wonderful

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Awesome. I can do fourier transforms with nothing but a pencil.

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The true elegance of mathematics laid out for all to see.

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Ah, that Albert A. Michelson!

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I would imagine that getting all the springs balanced would be kind of fiddley.

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