Scientists from the National Institute of Standards and Technology and the University of Colorado Boulder have a set a new record in accurate timekeeping, creating an atomic clock that won't lose or gain a second in 15 billion years - a time span greater than the estimated age of the Universe.
The atomic clock measures the oscillation of strontium atoms to create its 'tick,' and could one day become the standard for the world's official time. Currently, the official time is set using atomic clocks that measure the vibrational frequency of the element caesium, although these are only accurate in the region of one second in hundreds of millions of years.
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