Assertion: time dilation | /r/CapableOf | use optical atomic clocks
Facets:
Source sentences:
text: In 2010 time dilation was observed at speeds of less than 10 meters per second using optical atomic clocks connected by 75 meters of optical fiber.
text: In 2010 gravitational time dilation was measured at the earth's surface with a height difference of only one meter, using optical atomic clocks.