It’s clock time again on Hackaday, this time with a lovely laser-cut biretrograde clock by [PaulH175] over on Instructables. If you’ve never heard of a ‘biretrograde clock,’ well, we hadn’t either.
A laser clock developed by DLR has achieved a record level of accuracy for optical clocks, with a deviation of just one second every 30 million years. Laser clocks are set to improve satellite ...
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