4 ms·
Physicists have broken the record for the most accurate clock
- rubidium 11y agoJournal article (paywall): http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.063001 http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116... There's a team working at JILA in colorado who've achieved something similar with Strontium: http://arxiv.org/abs/1412.8261 http://arxiv.org/abs/1412.8261 Edit: One of the reasons to build these clocks is to find out if the fundamental constants really are unchanging. So they build two clocks that rely on different relations of fundamental constants, and see if the "ticking" of the clocks changes with respect to each other. See: http://arxiv.org/pdf/1407.4408.pdf http://arxiv.org/pdf/1407.4408.pdf for info on that.
- mchahn 11y ago> and see if the "ticking" of the clocks changes with respect to each other Maybe a stupid question. These clocks are so accurate wouldn't the time they measure vary by changes in the earth's mass and/or rotation speed?
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