Assertion: atomic clock | /r/CapableOf | measure time
Facets:
value: in a million years
type: TEMPORAL
value: within one second
type: TEMPORAL
value: like regular clocks
type: MANNER
Source sentences:
text: An atomic clock is a device that measures time using the microwave signal emitted by atoms – or the electrons in atoms – when they change energy levels.
text: Like regular clocks, atomic clocks measure time based on oscillation, which is to say, how fast their moving parts move back and forth.
text: Until the advent of atomic clocks that can measure time to within one second in a million years, there was no direct way of accurately measuring the time dilation predicted by Einstein, even at the velocities of space probes.