Atomic clock technology has been made so small it may soon be possible to incorporate super-accurate timekeeping into mobile devices such as cellphones. Computer chip fabrication techniques were used to make a clock mechanism that will neither lose nor gain a second in 300 years.
Researchers believe final development should see a battery-operated system that is about the size of a sugar lump. The US National Institute of Standards and Technology is behind the work. "These clocks will be so useful that we can't even think of the most significant applications at present," Nist's John Kitching told the BBC's Science In Action programme.
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