On this week’s “More To The Story,” Daniel Holz from the Bulletin of the Atomic Scientists discusses why the hands of the ...

An attosecond—or 0.000000000000000001 second—is no time at all for a person. That is not so for electrons, atoms and ...

In this work, a rubidium fountain clock through an 84km commercial optical fiber link was used to steer the atomic time scale generated by a clock ensemble with 2 hydrogen masers and 8 high ...