Many ancient civilizations observed astronomical bodies, often the Sun and Moon, to determine times, dates, and seasons. For thousands of years, devices have been used to measure and keep track of time. Atomic clocks are the most accurate timekeeping devices in practical use today. Accurate to within a few seconds over many thousands of years, they are used to calibrate other clocks and timekeeping instruments.
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Metsähovi Radio Observatory facilities are being used for experiments almost 100% of the time. To discuss the possiblity of specific experiments, please contact metsahovi at aalto dot fi.
Clocks (1 pcs)
An atomic clock is a clock device that uses a hyperfine transition frequency in the microwave, or electron transition frequency in the 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 primary standards for international time distribution services, to control the wave frequency of television broadcasts, and in global navigation satellite systems such as GPS.
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