Photograph of Cato Maximilian Guldberg and Peter Waag
- Circa 1891
Black and White portrait of Cato Maximilian Guldberg (1836-1902) and Peter Waage (1833-1900). The two men are wearing suits and sitting at a small round table.
Waage and Guldberg were Norwegian chemists, together they discovered the law of mass action. The law was later validated by Jacobus Henricus van't Hoff (1852-1911) in 1877.
Guldberg was a physical chemist. He is known for the Guldberg rule which states that the normal boiling point of a liquid is two-thirds of the critical temperature when measured on the absolute scale. Waage was a chemist and professor at the University of Kristiania (University of Oslo), he was married to Mathilde Sofie Guldberg (1845-1907), sister of Cato Guldberg.
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Riffarth, Heinrich. “Photograph of Cato Maximilian Guldberg and Peter Waag.” Meisenbach Riffarth & Company, circa 1891. Papers of Georg and Max Bredig, Box 4, Folder 41. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/ojass2f.
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