(CNN) -- Punctuality-phobes may soon no longer be able to blame perennial lateness on slow-running watches following the invention of an atomic clock small enough to wear on your wrist. Scientists at ...

The heart of a minuscule atomic clock—believed to be 100 times smaller than any other atomic clock—has been demonstrated by scientists at the Commerce Department’s National Institute of Standards and ...

The familiar tick-tock of wall clocks originates from the escapement mechanism, which controls gear movement in precise steps. While our brains perceive two distinct sounds, clocks actually produce ...