[time-nuts] Getting Better All the Time: JILA Strontium Atomic Clock Sets New Records

d0ct0r time at patoka.org
Mon Apr 27 14:49:37 EDT 2015

"In another advance at the far frontiers of timekeeping by National 
Institute of Standards and Technology (NIST) researchers, the latest 
modification of a record-setting strontium atomic clock has achieved 
precision and stability levels that now mean the clock would neither 
gain nor lose one second in some 15 billion years*—roughly the age of 
the universe".


"Our performance means that we can measure the gravitational shift when 
you raise the clock just 2 centimeters [0.79 inches] on the Earth's 
surface," study co-author Jun Ye, a physicist at JILA, a joint institute 
of the National Institute of Standards and Technology and the University 
of Colorado, Boulder, said in a statement.



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