Question
Which of the following are used for accurately
measuring very small time intervals?Solution
An atomic clock is a clock device that uses an electronic transition frequency in the microwave, optical, or ultraviolet region of the electromagnetic spectrum of atoms as a frequency standard for its timekeeping element. Atomic clocks are the most accurate time and frequency standards known, and are used as primaryĀ standardsĀ forĀ internationalĀ time distribution services, to control the wave frequency of television broadcasts, and in global navigation satellite systems such as GPS.
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