Atomic timekeeping, on the go
Boston MA (SPX) Nov 13, 2014
What time is it? The answer, no matter what your initial reference may be – a wristwatch, a smartphone, or an alarm clock – will always trace back to the atomic clock.
The international standard for time is set by atomic clocks – room-sized apparatuses that keep time by measuring the natural vibration of atoms in a vacuum. The frequency of atomic vibrations determines the length of one —> Read More Here