Pump organ

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 pump organ or reed organ is a type of organ that uses free reeds to generate sound, with air passing over vibrating thin metal strips mounted in a frame. Types include the pressure-based harmonium, the suction reed organ (which employs a vacuum system), and the Indian harmonium.

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

Image: Boygold, CC BY-SA 3.0, via Wikimedia Commons.