Tatyana Afanasyeva-Ehrenfest
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Tatyana Alexeyevna Afanasyeva-Ehrenfest was a Russian-Dutch mathematician and physicist who made contributions to the fields of statistical mechanics and statistical thermodynamics with her husband Pa
Tatyana Afanasyeva c. 1910
St. Petersburg circle of physicists. Sitting (from left to right): Paul Ehrenfest, Abram Ioffe, Dmitry Rozhdestvensky, Tatyana Afanasyeva. Standing (from left to right): Vladimir Chulanovsky, G. Weichardt, L. Isakov, G. Perlitz, Victor Robertovich Bursian, Jadwiga Szmidt
Albert Einstein standing between Paul jr. and Galinka Ehrenfest outside their house in Leiden, late 1920s or early 1930s
Paul Ehrenfest
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Paul Ehrenfest was an Austrian theoretical physicist who made major contributions to statistical mechanics and its relation to quantum mechanics, including the theory of phase transition and the Ehren
Tatyana Afanasyeva-Ehrenfest
…Russian-Dutch mathematician and physicist who made contributions to the fields of statistical mechanics and statistical thermodynamics with her husband Paul Ehrenfest. Tatyana Afanasyeva was born in Kiev, in the Russian Empire (present-day Ukraine). Her father was Alexander Afanasyev, a chief engineer on the Imperial…
Ehrenfest, c. 1910s
Ehrenfest's students, Leiden 1924. Left to right: Gerhard Heinrich Dieke, Samuel Abraham Goudsmit, Jan Tinbergen, Paul Ehrenfest, Ralph Kronig, and Enrico Fermi
Niels Bohr and Albert Einstein debating quantum theory at Ehrenfest's home in Leiden (December 1925).