Austrian-Dutch theoretical physicist Paul Ehrenfest (1880-1933, right) with Dutch theoretical physicist Johannes (Jan) Martinus Burgers (1895-1981, ce
Austrian-Dutch theoretical physicist Paul Ehrenfest (1880-1933, right) with Dutch theoretical physicist Johannes (Jan) Martinus Burgers (1895-1981, centre) and Father Burgers (left). Ehrenfest worked on quantum theory and was a contemporary of Einstein, who lauded him as the best teacher of physics he had ever known. He was responsible for the theory of phase transition and the Ehrenfest theorem. Burgers studied under Ehrenfest and produced various theories, including Burgers' equation, the Burgers vector in dislocation theory and the Burgers material in viscoelasticity. Photographed circa 1917.
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