Thanks to a new discovery, atomic clocks of the future might be handheld instead of the size of a refrigerator. By Avery Thompson Published: Mar 12, 2019 5:58 PM EDT EPic Lab, University of Sussex ...

A caesium fountain clock that keeps the United Kingdom's atomic time is now the most accurate long-term timekeeper in the world, according to a new evaluation of the clock that will be published ...

A nuclear clock is a long-sought-after device that theoretically trumps the accuracy of all other clocks—even atomic ones. “Atomic clocks, such as the caesium-133 clock or the strontium-87 ...

Just like an old-fashioned grandfather clock, which uses a pendulum to measure time, atomic clocks use the very regular and measurable oscillations of caesium atoms—9,192,631,770 of them make up ...