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1922//1925, The Theory of Relativity

1922//1925, The Theory of Relativity
Lot of three early works on the theory of relativity with two being descriptive rather than mathematical and written in German. These include "Der Aether Und Die Relativitaetstheorie" by Dr. L. Graetz (1923 first printing, softbound, 80pp.) and "Der Physikalische Gehalt Der Speziellen Relativitaetstheorie" by Dr. D. Gawronsky (1925, softbound, 64pp.). The third book is technical and in English. It is "The Foundations of Einstein's Theory of Gravitation" by Erwin Freundlich with the preface by Einstein himself. Translated from the German by Brose. (1922, softbound, 60pp.). Early works on relativity are quite scarce. The condition of the books is fine considering their age.

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