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Created a watch with an error of 0.5 seconds for fourteen billion years of work

Specialists at the National Institute of Standards and Technology of the United States have developed anatomic clock with fantastic accuracy — over a period of fourteen billion years, the permissible error will be only half a second.

The clock uses a grid of lasers that captures the atoms of ytterbium – a metal that was discovered in the late nineteenth century. Experts measure the frequency of atomic vibrations, which allows to measure their transition from one energy level to another – this is how the clock “ticks” at a speed of 500 trillion times per second.

The clock is planned to be used for scientific purposes, the main interest of researchers is space. Theoretically, the device with such accuracy will allow to detect dark matter. True, it is unknown whether it really exists.

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