げんしどけい
原子時計
1. atomic clock
2. Atomic clockAn atomic clock is a clock 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 primary standards for international time distribution services, to control the wave frequency of television broadcasts, and in global navigation satellite systems such as GPS.
Read “Atomic clock” on English Wikipedia
Read “原子時計” on Japanese Wikipedia
Read “Atomic clock” on DBpedia
Read “Atomic clock” on English Wikipedia
Read “原子時計” on Japanese Wikipedia
Read “Atomic clock” on DBpedia
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