Diffusion pump

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Notion

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Science and technology

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What Wikipedia says

Diffusion pumps are high-vacuum pumps that use high-speed vapor jets to direct gas molecules to the exhaust. Invented by Wolfgang Gaede in 1915, they are used to produce high and ultra-high vacuums. Because they cannot discharge directly into the atmosphere, they require a mechanical backing pump.

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

Image: Kkmurray, CC BY 3.0, via Wikimedia Commons.