Russia. Alexander Friedmann Russian and Soviet physicist and mathematician Illustrated Envelop

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Alexander Friedmann

Russian and Soviet physicist and mathematician

Illustrated Envelop

Description Alexander Alexandrovich Friedmann (June 16 [O.S. 4], 1888 – September 16, 1925) was a Russian and Soviet physicist and mathematician. He is best known for his pioneering theory that the universe was expanding, governed by a set of equations he developed now known as the Friedmann equations.

 

The classic solution of the Einstein field equations that describes a homogeneous and isotropic universe is called the Friedmann–Lemaître–Robertson–Walker metric, or FLRW, after Friedmann, Georges Lemaître, Howard P. Robertson and Arthur Geoffrey Walker, who worked on the problem in 1920s and 30s independently of Friedmann.

 

In addition to general relativity, Friedmann’s interests included hydrodynamics and meteorology.

Type Illustrated Envelop
Published by/for: Ministry of Communications, 1988
Condition: Excellent
Edges/Corners Fine
Used/Unused Unused

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