Einstein Theory Relativity (4 results)
Published by The Adelphi, London, 1931
- Softcover
Seller: Cosmo Books, Shropshire., United KingdomCosmo Books
Contact seller5-star sellerCondition: Used - Very good
US$ 15.18
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Add to basketCondition: Very Good. 10 pages. An authentic standalone article, extracted from a larger volume. Not a reprint or reproduction, but an original work in its own right. Preserved in a modern card cover, prepared for practicality - an unassuming but serviceable presentation that favours function over finery. Size: 13.5 x 21.5 cms.…Category: The Adelphi; Cosmo Books : 29 years on ABE, 47 years taking care of customers. A bookseller you can rely on. Softcover (Booklet - Unbound Pages).
More imagesAutograph Letter Signed ("A. Einstein"), in German.
Einstein, Albert, German-born physicist, humanitarian and Nobel Prize winner; promulgator of the General Theory of Relativity (1879-1955).
Published by [Berlin], June 30, 1920, 1920
- Softcover
- Manuscript / Paper Collectible
Seller: Kotte Autographs GmbH, Roßhaupten, GermanyKotte Autographs GmbH
Contact seller5-star sellerCondition: Used
US$ 35,886.83
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Add to basket4to. 1 page. Einstein on the value of relativity for philosophy. Einstein writes to Hans Reichenbach, the philosopher of science and an influential expositor of Relativity. In part (translation): "I am really very pleased that you want to dedicate your excellent brochure to me, but even more so that you give me such high marks a…s a lecturer and thinker. The value of the th.[eory] of rel.[ativity] for philosophy seems to me to be that it exposed the dubiousness of certain concepts that even in philosophy were recognized as small change. Concepts are simply empty when they stop being firmly linked to experiences. They resemble upstarts who are ashamed of their origins and want to disown them." The letter was published in the Collected Papers of Albert Einstein, vol 10, doc 66, pp 323-324 (CPAE Translation, vol 10, doc 66, p 201). Slightly uneven toning, a few spots in upper margin, two-hole punch at left margin, folding creases.
More imagesPublished by Princeton, 1947-51, 1947
- Manuscript / Paper Collectible
Seller: Kotte Autographs GmbH, Roßhaupten, GermanyKotte Autographs GmbH
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US$ 29,905.70
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Add to basket4to. Each 1/2 page. Personal stationery, onionskin paper; earliest letter mounted at corners to larger sheet and sides trimmed (not affecting text), folds (few with minor loss to signature), most with minor chipping at edges, faint scattered soiling. To inventor John Anthony Gillmeier, in German, mostly concerning his invention…of a machine to therapeutically stimulate muscles using electric current, and declining his invitation to join an organization [New York Academy of Sciences, of which Gillmeier was a member?].22 October 1947: "[] You seem to overestimate the possibilities of my work, as do many others. Under the present circumstances, I can do nothing but state my opinion from time to time when the opportunity arises, and not too often, so as not to compromise [] [the] effect. []" 11 September 1951: "I have read your letter [] and have looked at your drawings, but I cannot judge them either in a positive or a negative sense. The fact that currents can act on muscles is well known. However, whether you can achieve a health-promoting effect in the way you have suggested, I have no judgment. []" Einstein 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 development of quantum theory.
More imagesTyped Letter Signed ("A. Einstein") with Autograph Postscript, in German
Einstein, Albert, German-born physicist, humanitarian and Nobel Prize winner; promulgator of the General Theory of Relativity (1879-1955).
Published by Berlin, October 19, 1928, 1928
- Manuscript / Paper Collectible
Seller: Kotte Autographs GmbH, Roßhaupten, GermanyKotte Autographs GmbH
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US$ 41,867.97
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Add to basket4to. 2 pp. Punch holes. On his personal letterhead. Einstein writes to Reichenbach (1891-1953), a colleague and important expositor of Relativity, to suggest to him a clearer way of explaining one aspect of his theory. He opens the letter by saying (in translation): "I think the logical presentation that you give of my theory is… indeed possible, but it's not the simplest one." After providing a list of four possibilities for "increasing specialization regarding the distant comparison of vectors" he comments: "Of course one can also start with an affine connection and specialize either by introducing a metric or by introducing integrability conditions; i.e. do it the way you did. But this is less simple, less natural." He goes on to assert that "[t]he naturalness of the field of structure envisaged by me seems indisputable to me. I will only know in a few months whether this construction contains deeper traits of reality; for the problems needed to be solved to make this decision are not at all easy." The letter ends with a postscript in Einstein's hand, inviting Reichenbach and his wife to tea, noting "Schrödinger is supposed to come as well.".
