Quantum timekeeping is supposed to be the ultimate in efficiency, with tiny devices that tick using the rules of quantum mechanics instead of swinging pendulums or vibrating quartz. Yet new work on a ...

Scientists are exploring a new type of optical atomic clock based on ytterbium-173 ions that could help define the future ...

Reading analog clocks is a pretty straightforward skill to learn. However, if you’ve already learned to read and don’t want ...