There are significantly different architectures for what are known as “atomic” clocks. Optically driven atomic clocks offer a new set of performance attributes. The optical atomic clocks use paired ...

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.

These days, checking the time is as easy as pulling out your smartphone or asking your favorite home assistant device to read it to you. But if you spend your days seated at a desk or workstation, ...