Atomic Clocks
Atomic clocks are very precise and have nearly no clock drift. The rotation of the Earth itself actually is less precise than modern atomic clocks used as time standards. Thus to keep the Coordinated Universal Time (UTC) in line with the Earth's rotation, a leap second is added to some years.
Read more about this topic: Clock Drift
Famous quotes containing the words atomic and/or clocks:
“Take adultery or theft.
Merely sins.
It is evil who dines on the soul,
stretching out its long bone tongue.
It is evil who tweezers my heart,
picking out its atomic worms.”
—Anne Sexton (19281974)
“It was a bright, cold day in April and the clocks were striking thirteen.”
—George Orwell (19031950)