<div class="description">
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.</div>
Circa 1891
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<ul><li><a rel="nofollow" class="external text" href="https://digital.sciencehistory.org/works/ojass2f">Record in source catalog</a></li>
<li>DPLA identifier: <a rel="nofollow" class="external text" href="https://dp.la/item/60eace3186d98ae84c5972506e33515a">60eace3186d98ae84c5972506e33515a</a></li>
<li>Science History Institute identifier: padig:SHI-ojass2f</li></ul></span>