Desktop Atomic Clock

An atomic clock is a type of clock that uses an atomic resonance frequency standard to feed its counter. Early atomic clocks were masers with attached equipment. Today's best atomic frequency standards (or clocks) are based on absorption spectroscopy of cold atoms in atomic fountains.

The first atomic clock was built in 1949 at the U.S. National Bureau of Standards (NBS). The first accurate atomic clock, a cesium standard based on a certain transition of the cesium-133 atom, was built by Louis Essen in 1955 at the National Physical Laboratory in the UK. This led to the internationally agreed definition of the second being based on atomic time.

Now yo can "Synchronize your computer clock with an atomic clock over the Internet"
Desktop Atomic Clock is a powerful program that synchronizes clock of your computer via Internet. Desktop Atomic Clock uses National Institute of Standards and Technology (NIST) Atomic Clock servers. Download