Question: In what year was the physicist of whom Erwin Finlay-Freundlich was a working associate born?

<P0-S0>  Freundlich was a working associate of Albert Einstein and introduced experiments for which the general theory of relativity could be tested by astronomical observations based on the gravitational redshift. <P0-S1> Erwin Finlay-Freundlich FRSE FRAS (] ; 29 May 1885 – 24 July 1964) was a German astronomer, a pupil of Felix Klein. <SEP> <P1-S0> Andrew Gemant (1895–1983) was a renowned physicist, remembered in part by the eponymous Andrew Gemant Award. <P1-S1>  His work included a series of fundamental papers on viscoelasticity and fractional differentials, published in the mid 20th Century. <P1-S2>  Andrew Gemant was born in Nagyvarad, Hungary on July 27, 1895. <P1-S3>  He served in the Austro-Hungarian army as a medical student during the World War I and received his M.D. from the University of Budapest in 1919. <P1-S4>  During 1920-1922 he attended the University of Berlin and worked in the laboratories of Leonor Michaelis and Herbert Freundlich. <P1-S5>  He received his Ph.D. in physics in 1922. <P1-S6>  From 1923-1924, Gemant was a research physicist at Radiologie Inc, an X-ray tube manufacturer in Berlin. <P1-S7>  From 1925-1931 he was a research physicist at Siemens-Schuckert Cable Company. <P1-S8>  He held a privat-docent position at the Technical University of Berlin (Technische Universität Berlin) from 1929-1933, and from 1932-1933 he was a researcher at the Heinrich Hertz Institute (HHI) for Research on Oscillations. <P1-S9>  In 1933 Gemant was dismissed from his research and teaching positions by the National Socialist (Nazi) government. <P1-S10>  He and his wife Susi (Sophia Ida Marie), whom he had recently married, subsequently left Germany for England, and from 1934-1937 Gemant was a research associate in the Engineering Laboratory of Oxford University. <P1-S11>  The Gemants then moved to the United States, where from 1938-1939 he was a research associate in the Electrical Engineering Department at the University of Wisconsin. <P1-S12>  From 1940-1960 Gemant was a staff physicist at the Detroit Edison Company. <P1-S13>  He subsequently held positions as a research associate at Grace Hospital in Detroit, Michigan from 1961-1971 and in Wayne State University's Department of Biochemistry from 1972-1983. <P1-S14>  He died in February 1983 at the age of 87. <SEP> <P2-S0> The Einstein Tower (German: "Einsteinturm") is an astrophysical observatory in the Albert Einstein Science Park in Potsdam, Germany built by Erich Mendelsohn. <P2-S1>  It was built on the summit of the Potsdam "Telegraphenberg" to house a solar telescope designed by the astronomer Erwin Finlay-Freundlich. <P2-S2>  The telescope supports experiments and observations to validate (or disprove) Albert Einstein's relativity theory. <P2-S3>  The building was first conceived around 1917, built from 1919 to 1921 after a fund-raising drive, and became operational in 1924. <P2-S4>  Although Einstein never worked there, he supported the construction and operation of the telescope. <P2-S5>  It is still a working solar observatory today as part of the Leibniz Institute for Astrophysics Potsdam. <P2-S6>  Light from the telescope is directed down through the shaft to the basement where the instruments and laboratory are located. <P2-S7>  There were more than half a dozen telescopes in the laboratory. <SEP> <P3-S0>  Einstein developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics). <P3-S1>  Einstein's work is also known for its influence on the philosophy of science. <P3-S2> Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist. <P3-S3>  Einstein is best known by the general public for his mass–energy equivalence formula "E" = "mc" (which has been dubbed "the world's most famous equation"). <P3-S4>  He received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect", a pivotal step in the evolution of quantum theory.