The Atomic Secrets of Accurate Time Keeping
JAN 22, 2007
DOI: 10.1063/PT.5.020790
NPR : Clocks measure time. But have you ever wondered how they do it? For this week’s Science Out Of The Box, the answer can be found at the U.S. Naval Observatory’s master clock facility. That’s where the Navy fires a microwave beam at an atom to keep time.
© 2007 American Institute of Physics
