Last Updated
：2025/12/07
hydrogen maser atomic clock
（ plural ）
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an atomic clock which uses the 1.4 GHz transition in a hydrogen atom to measure time to within 0.45 nanoseconds over a span of 12 hours
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hydrogen maser atomic clock
A hydrogen maser atomic clock aboard the satellite maintained synchronization with the ground station to within 0.45 nanoseconds over a 12-hour period.
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A hydrogen maser atomic clock aboard the satellite maintained synchronization with the ground station to within 0.45 nanoseconds over a 12-hour period.
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