Atomic & Projection Clocks The World's Most Accurate Timekeeping Devices answer the age old question, what time is it?
Atomic clocks, radio controlled clocks and exact set clocks are all different names for clocks that keep perfect time by automatically synchronizing to the radio signal emitted from the U.S. Atomic Clock in Colorado. Radio controled clocks reset daily to the split second, and adjust automatically to Daylight Savings Time, Leap Year and Time Zone Changes.
