New atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...

The threat of GPS jamming extends beyond aviation. Without GPS, our lives would grind to a halt: in 2017, a government report ...

Four nanoseconds faster per day to be exact, quantum electronics ... is a type of atomic clock that uses the frequency of atomic oscillation to measure advancement of time. A myriad of atoms ...

Time servers, provided by a variety of government agencies as well as tech giants, provide them with the exact time and date thanks to accurate atomic clocks ... battery-backed clock at all ...