John Aitken

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Science and technology

Knowledge cost

2

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What Wikipedia says

John Aitken, FRS, FRSE LLD (18 September 1839 – 14 November 1919) was a Scottish meteorologist, physicist and marine engineer. He was one of the founders of cloud physics and aerosol science, who built the first apparatus to measure the number of dust and fog particles in the atmosphere, a koniscope.

Excerpt from the Wikipedia article “John Aitken (meteorologist)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Unknown author, Public domain, via Wikimedia Commons.