Vier Vorlesungen über Relativitätstheorie gehalten im Mai 1921 an der Universität Princeton, Braunschweig: Viewer & Sohn, 1922 WITH the English translation, The Meaning of Relativity, Fourth Edition Including the Generalization of Gravitation Theory, Princeton: New Jersey, 1953. Albert Einstein.

Vier Vorlesungen über Relativitätstheorie gehalten im Mai 1921 an der Universität Princeton, Braunschweig: Viewer & Sohn, 1922 WITH the English translation, The Meaning of Relativity, Fourth Edition Including the Generalization of Gravitation Theory, Princeton: New Jersey, 1953

1st Edition. 1922 FIRST GERMAN EDITION IN ORIGINAL WRAPS OF EINSTEIN’S FOUR LECTURES ON RELATIVITY DELIVERED AT PRINCETON UNIVERSITY IN THE SPRING OF 1921 (Norman 697; Weil 124). Included with this is a 1953 fourth edition (hardbound with original wraps) of the English translation of those lectures, The Meaning of Relativity, inclusive, significantly, of both the Appendix for the Second Edition and Appendix II: Generalization of Gravitation Theory. The 1953 fourth edition of Appendix II is Weil 235, Einstein’s last attempt at and most important final formulation of the topic of greatest important to him: the unification of his general theory of relativity with electromagnetism. "This was Einstein's ultimate response to the mechanical-electromagnetic crisis in physical theory he had first talked about in the opening of his 1905 light quantum-paper" (Nandor, D.S.B., p. 330).

The English titles of Einstein’s four lectures are: “Space and Time in Pre-Relativity Physics”, “The Theory of Special Relativity”, “The General Theory of Relativity I”, “The General Theory of Relativity II”.

While the most important item is obviously the German first edition, fourth edition, specifically, of the English translation, Appendix II: Generalization of Gravitation Theory is an important work unto itself. Appendix II did not begin appearing in The Mean of Relativity until the 1949 third edition; he revised it for the 1950 edition and then heavily revised it for the volume offered there, the 1953 fourth edition. It is in Appendix II that Einstein “described his most recent work on unification" (Pais). In his own words, “The last step of the theory concerns the unification of the field concept, which is characterized by the transition to non-symmetric fields. The difficulty in the choice of the field laws has been fully overcome only in the last few months” (Einstein, 1953). It is Appendix II that The New York Times hailed— though of course Einstein had no hand in their title — under the heading "New Einstein theory gives a master key to the universe”. Item #1308

CONDITION & DETAILS: (1) Braunschweig: Viewer & Sohn (Vier Vorlesungen, 1922). Octavo. (9 x 6 inches; 225 x 150mm). [2], 70pp., [1]. Bound in original paper wraps; front wrap and first few pages are detached as is the rear wrap. Minor scuffing and chipping at the edges; 2 light ownership stamps reading “G. J. Weimar, 4621 Morris St., GTN” and on the title page (see image). Some minor chipping at the edges of some pages. Withal, clean and bright. A nice copy in original wraps. (2) Princeton: Princeton University Press (The Meaning of Relativity, 1953). Octavo. (8 x 5.5 inches; 200 x 138mm). Complete with original dust jacket. The jacket, book, and interior are all in fine condition. Exceptionally bright, clean, and solid.

Price: $400.00

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