By Eduard A. Tropp, Viktor Ya. Frenkel, Artur D. Chernin, Alexander Dron, Michael Burov
Our universe may be defined mathematically via an easy version built in 1922 at Petrograd (St. Petersburg) by way of Alexander Friedmann (1888-1925). with no the good thing about observational facts, Friedmann envisioned that the entire universe could extend and evolve with time. This awesome prediction used to be proven seven years later via Edwin Hubble. Its originator, regrettably did not reside to delight in this triumph. This brilliant biography of a good scientist units his existence and paintings opposed to a large backdrop of the historical past of cosmological reports and its significant avid gamers, akin to Einstein and others. The ebook is a window on Friedmann's tuition and collage years, army provider, and instructing and study in the course of a seminal interval of Soviet heritage. The authors comprise certain archival fabric, akin to Friedmann's letters from the Russian entrance, in addition to modern files and memories of affiliates. there's a specific therapy of his paintings in theoretical cosmology (1922-1924), set within the context of the association of Soviet technology on the time.
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Additional resources for Alexander A Friedmann: The Man who Made the Universe Expand
They left at half past twelve, after supper. April 18, 1909. The students Tamarkin, Friedmann, Petelin came to see me this evening . . e. stability, in the sense of Poincare and Lyapunov) or the problem of equilibrium of a rectangular plate. 31 suggested Petelin read what Jacobi had to say about the principle of the last multiplier. I'll think it over again and will probably find some other topics too. April 25. Finished my lectures on integration of equations. For some reason, Messrs. ). September 12.
War, revolution, post-revolutionary years. The description of world events is next to everyday issues, indications of food prices, etc. However, among all these treasures we were mainly interested in what concerned Friedmann and his friends. Chronologically, the first mention of Alexander Friedmann was found in the entry for January 13, 1908. At that time Tamarkin and Friedmann - third-year students - were attending Steklov's course in the integration of partial differential equations. Steklov records his impressions in a rapid handwriting, abbreviating some words and often not leaving any space between others (we expand the abbreviated words - they are easy to decipher).
A. Bulgakov, physics of partial forces and thermal physics, higher optics and thermodynamics by O. D. Khvolson, and virtually all the courses in mechanics by D. K. Bobylev. Against some courses that Friedmann attended in his final years at college his record book has the note "exempted" - probably exempted from tests or examinations because Professors Bobylev, Steklov and Sokhotsky were sure of the results without examinations. 30 University years, 1906-14 Friedmann in the early 1910s. Steklov's diaries Information about Friedmann the student, and documentary evidence of his activities, can be found in V.
Alexander A Friedmann: The Man who Made the Universe Expand by Eduard A. Tropp, Viktor Ya. Frenkel, Artur D. Chernin, Alexander Dron, Michael Burov