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Paul Ehrenfest had the unique gift to contribute to the fundamental debate while drawing attention to critical aspects that had till then remained unnoticed. He was a close friend of Albert Einstein, who praised him for his passionate engagement for the development and future of his students. His lectures, were presented in an entertaining mix of Dutch, English and Vienna dialect, were ...
Biography. Paul Ehrenfest's father, Sigmund Ehrenfest, came from a poor Jewish family. He was working in a weaving mill in the Jewish village of Loschwitz in Moravia when he married Johanna Jellinek. After the marriage they moved to Vienna where they set up a grocery business which fared rather well. They had five children who survived birth ...
Beziehung, Bekanntschaft, Freundschaft. Paul Ehrenfest, * 18. Jänner 1880 Wien, † 25. September 1933 (Selbstmord) Amsterdam, Physiker, Gattin Tatjana. Wirkte 1907-1912 in St. Petersburg, danach als Professor für theoretische Physik in Leiden. In der fundamentalen Arbeit „Die begriffliche Grundlagen der Statistischen Auffassung in der ...
18. Jan. 2020 · Paul Ehrenfest (1880-1933) [1] On January 18, 1881, Austrian and Dutch theoretical physicist Paul Ehrenfest was born. Ehrenfest made major contributions to the field of statistical mechanics and its relations with quantum mechanics, including the theory of phase transition and the Ehrenfest theorem. “Einstein, my upset stomach hates your ...
Paul Ehrenfest (født 18. januar 1880, død 25. september 1933) var en østrigsk fysiker og matematiker, som fik hollandsk statsborgerskab 24. marts 1922. Hans betydningsfulde videnskabelige produktion var indenfor statistisk mekanik i en kvantemekanik formulering, herunder teorien for faseovergange og Ehrenfests teorem .
September 1933 brachte Paul Ehrenfest unter tragischen Umständen zur Bestürzung seiner Familie und seiner zahlreichen Freunde und Bekannten seinen unheilvollen Entschluß zur Ausführung, die ihm zu schwer gewordene Last des Lebens von sich abzuwerfen. An uns ist es nun, das Andenken an sein wissenschaftliches Wirken und das Bild seiner Persönlichkeit frei von jenen ...
The Ehrenfest theorem, named after Austrian theoretical physicist Paul Ehrenfest, relates the time derivative of the expectation values of the position and momentum operators x and p to the expectation value of the force on a massive particle moving in a scalar potential , [1] The Ehrenfest theorem is a special case of a more general relation ...
