The advantage of a radio-controlled clock that receives the time signal from WWVB is that you never have to set it again. Whether it’s a little digital job on your desk, or some big analog wall ...

The advantage of a radio-controlled clock that receives the time signal from WWVB is that you never have to set it again. Whether it’s a little digital job on your desk, or some big analog wa… ...

Size: 5 x 6.45 inches; Time zones: 7; This large atomic alarm clock can either be set on a tabletop or hung on your wall with the included mount. This battery-powered alarm clock requires three ...

Atomic clock slices time into half-milliseconds / Games' cesium device sets stopwatch systems. By Carl T. Hall, Chronicle Science Writer Feb 18, 2002.

Atomic clocks record time using microwaves at a frequency matched to electron transitions in certain atoms. They are the basis upon which a second is defined. But there is a new kid on the block ...