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Showing posts with label Rebecca Morelle. Show all posts
Showing posts with label Rebecca Morelle. Show all posts

Wednesday 10 July 2013

Optical lattice atomic clock could 'redefine the second'

The optical lattice clock shines lasers
on atoms to measure time
Scientists say they have found a more accurate way to measure time. We currently use atomic clocks to count the seconds, but tests on an alternative atomic timekeeper have revealed that it is more precise.

The French researchers said the clocks, which are called optical lattice clocks, lost just one second every 300 million years.

Writing in Nature Communications, the team said they offered a better system for defining the second.