1. This definition is based on the operation of a caesium atomic clock.

2. SKY SCAN 34202 Atomic Clock Radio with Projection Time & Temperature 2.8 out of 5 stars 15 #26

3. Time.is displays exact, official atomic Clock time for any time zone (more than 7 million locations) in 52 languages

4. Choose from quartz Clock movements like time-only, chiming and pendulum, to atomic Clock movements and other specialty Clock movements.

5. In its 26 flight India’s workhorse rocket the PSLV hoisted a 1432 kilogram special satellite that carries on it a precision clock called an atomic clock and a set of other home-made instruments that beam down accurate time and location data.

6. An Atomic clock is a clock whose timekeeping mechanism is based on the interaction of electromagnetic radiation with the excited states of certain atoms.Specifically, either a hyperfine transition in the microwave, or electron transition in the optical or ultraviolet region of the emission spectrum of an atom is used as a frequency standard for the timekeeping element.