Sir John Herschel | duration: 20 seconds

Historical image is Public Domain

AI tools were used to animate this celebrated 1867 portrait by Julia Margaret Cameron of Victorian England’s preeminent scientist, astronomer, and mathematician Sir John Herschel.

An accomplished chemist, Herschel discovered the action of hyposulfite of soda on otherwise insoluble silver salts in 1819, which led to the use of "hypo" as a fixing agent in photography. In 1839, independently of William Henry Fox Talbot, Herschel also invented a photographic process using sensitized paper. It was Herschel who coined the use of the terms photography , positive , and negative to refer to photographic images.

From the website of the Getty Museum | https://www.getty.edu/art/collection/person/103KHK