Inside the Beating Heart of an Optical Atomic Clock

Behold, the beating heart of a time machine! Or "clock", as most people call them, but this one is nothing like your grandfather's. This super-accurate timekeeper is an optical atomic clock built by the UK's National Physical Laboratory (NPL) and its tick is governed by a single ion of the element strontium. » 2/05/13 9:20am 2/05/13 9:20am

New Atomic Clock Will Be Accurate for 200 Million Years

Physicists at the Joint Institute for Laboratory Astrophysics have developed a new atomic clock that is so accurate, it will not lose a second of time in more than 200 million years. That makes the old atomic clock record holder and its 80 million year accuracy rating look like something you would get out of a gumball… » 2/15/08 6:50pm 2/15/08 6:50pm