Atomic clock

Rarity: Rare

A topic known well beyond its field, found in many languages.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms. It is based on the fact that atoms have quantised energy levels, and transitions between such levels are driven by very specific frequencies of electromagnetic radiation.

Excerpt from the Wikipedia article “Atomic clock”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: National Physical Laboratory, Public domain, via Wikimedia Commons.