Optical Clock Could Redefine Time

The second, as we know it, may soon be a thing of the past as a measurement of time.

French physicists have successfully tested two optical lattice clocks, which would lose just one second every 300 million years. The clocks are so accurate, they could lead to a new definition of a second.

Optical lattice clocks, which have been around for about a decade, could one day replace the atomic clocks, which have been the standard for decades. Atomic clocks work by measuring the vibration of …

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