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Meaning of hydrogen maser atomic clock | Babel Free

Noun CEFR C2

Definitions

An atomic clock which uses the 1.4 GHz transition in a hydrogen atom to measure time to within 0.45 nanosecond over a span of twelve hours.

CEFR level

C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
See all C2 English words →

See also

hydrogen monoxide hydrogen nitrate hydrogen oxide hydrogen peroxide hydrogen phosphate hydrogen potassium carbonate

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