Michelson–Morley experiment

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.

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Notion

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Science and technology

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What Wikipedia says

The Michelson–Morley experiment was an attempt to measure the motion of the Earth relative to the luminiferous aether, a supposed medium permeating space that was thought to be the carrier of light waves.

Excerpt from the Wikipedia article “Michelson–Morley experiment”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Albert Abraham Michelson (1852 – 1931) with Edward Morley (1838 -1923), Public domain, via Wikimedia Commons.