The Long Now Orrery clock

Craft & Design Science
The Long Now Orrery clock

55696802 F420Bc7742 S Stunning photos of the Orrery clock from Make pal Jacob Appelbaum. The Orrery is a ten foot tall planet tracking display. The lower half is a mechanical binary calculation engine. Each layer is calculating the orbit if one of the six human eye visible planets (Mercury through Saturn) to 28 bits of accuracy. The Orrery is primarily made of monel (a nickel copper alloy), and stainless steel. The planet spheres are ground from natural stones that resemble each planet they represent. [via] Link. More information about the clock here.

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