What he ended up with is a clock that is almost impossible to read correctly. He’s using colors to tell the time. We immediately thought this might make use of resistor codes as the display but ...

There are 12 numbers around the clock face, and each interval is 5 minutes, so there are 12 × 5 = 60 minutes in an hour. Let's use this knowledge to tell the time on the clocks below. This clock ...

Not that the present situation and the abundance of free time that many are experiencing has anything to do with [Leo Fernekes] all-transistor digital clock build, which he started a year ago ...

the ability to precisely track and tell time is critical across scales spanning over 15 orders of magnitude: from the nanosecond accuracy of atomic clocks used for global positioning systems to ...