Second 'quantum logic clock' based on aluminum ion is now world's most precise clock
Monday, February 8, 2010 - 01:14
in Physics & Chemistry
Physicists have built an enhanced version of an experimental atomic clock based on a single aluminum atom that is now the world's most precise clock, more than twice as precise as the previous pacesetter based on a mercury atom. The new aluminum clock would neither gain nor lose one second in about 3.7 billion years.