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Physicists have said they have fine-tuned an atomic clock to the point where it won’t lose or gain a second in 15bn years – longer than the universe has existed.
The “optical lattice” clock ( http://www.nature.com/ncomms/2015/150421/ncomms7896/full/ncomms7896.html ), which uses strontium atoms, is now three times more accurate than a year ago when it set the previous world record, its developers reported in the journal Nature Communications.
The advance brings science a step closer to replacing the current gold standard in timekeeping: the caesium fountain clock that is used to set Coordinated Universal Time (UTC), the official world time.
http://www.theguardian.com/science/2015/apr/22/record-breaking-clock-invented-which-only-loses-a-second-in-15-billion-years
[Also Covered By]: http://www.theverge.com/2015/4/22/8466681/most-accurate-atomic-clock-optical-lattice-strontium
(Score: 0) by Anonymous Coward on Thursday April 23 2015, @12:20PM
No, it won't. Rather, the elapsed time at both places will be different.
If you're closer to the pole, measuring the distance between two meridians will give a smaller value. But not because your measuring tape gets longer near the pole, but because the distance between meridians gets shorter. It's the exact same with time at different gravitational potential: It's not that your clock is slower, it's that the time difference is smaller.