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) via Alexander Friedmann (1888-1925). with out the advantage of observational facts, Friedmann anticipated that the complete universe may extend and evolve with time. This staggering prediction was once proven seven years later by way of Edwin Hubble. Its originator, regrettably did not stay to appreciate this triumph. This brilliant biography of an exceptional scientist units his lifestyles and paintings opposed to a large backdrop of the heritage of cosmological reports and its significant gamers, similar to Einstein and others. The e-book is a window on Friedmann's university and collage years, army provider, and educating and examine in the course of a seminal interval of Soviet heritage. The authors comprise precise archival fabric, resembling Friedmann's letters from the Russian entrance, in addition to modern documents and memories of work-mates. there's a specified 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
From the mid-fifteenth century onward the university became one of Europe’s leading academic centres of mathematics, astronomy, astrology, geography and legal studies. The geographer Hartmann Schedel, in his Historia Mundi, published in 1493, writes in praise of the renowned Jagiellonian University, which had a chair in astronomy and astrology as early as 1410, the first in Central Europe: ‘There is in Krakow a famous university, which boasts many most eminent highly educated scholars, and in which numerous liberal arts are practiced.
1034–58), the fourth ruler of the Piast dynasty that had been founded by Mieszko I (r. 960–92). It was devastated during the Mongol invasions that swept across Eastern Europe in 1241, 1259 and 1287 and almost destroyed the Polish kingdom, which was reunified under Wladyslaw Lokietek (r. 1306/20–33), the first king to be crowned in Krakow. The burghers in Krakow at the time were predominately German and German-speaking. Indigenous Poles were forbidden to live in the city since princes and landlords feared the loss of manpower from their estates, though many peasants managed to settle anyway.
Gerbert came to the attention of Otto I (r. 962–73), the Holy Roman Emperor, who was then residing in Rome. Otto arranged for Gerbert’s assignment to Adalboro, Archbishop of Rheims, who was appointed Master of the Cathedral School there, which he reorganized with such success that students flocked to it from all parts of the Empire. Gerbert’s students are known to have gone on to teach at eight other cathedral schools in northern Europe, where they emphasized the mathematics and astronomy he had learned from Islamic sources in Spain.
Alexander A. Friedmann: The man who made the Universe expand by Eduard A. Tropp, Viktor Ya. Frenkel, Artur D. Chernin, Alexander Dron, Michael Burov