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How to Make a Clock Run For 10,000 Years

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Clock escapement

The clock's escapement is a delicate-looking but durable contraption made mostly of titanium that ticks once every 10 seconds.

Jon Snyder /

High on a rocky ridge in the desert, nestled among 5,000-year-old bristlecone pines, is the topmost part of a clock that has been ticking for thousands of years.

From Wired
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