Lancaster, PA., and New York: American Physical Society, 1948; 1949; 1951. First edition, journal issues, documenting the invention of the transistor, “which has been called ‘the most important invention of the 20th Century.’ Developed from semiconductor material, the transistor was the first device that could both amplify an electrical signal..... More
Item #4566

[London: Macmillan, 1939]. First edition, very rare offprint, of this sequel to the paper of Bohr & Kalckar, ‘On the Transmutation of Atomic Nuclei by Impact of Material Particles’, which had introduced the ‘liquid-drop model’ of the nucleus. “Bohr’s ‘droplet model’ of nuclear reactions, refined in various ways since it..... More
Item #5036

Copenhagen: IIe Congrès International de la Lumière, 1932. First edition of this famous lecture, which marks Bohr’s first detailed attempt to apply concepts arising from quantum mechanics (particularly complementarity) to areas outside physics. “Here, for the first time, Bohr raised a question that was to preoccupy him, off and on..... More
Item #3792

Copenhagen: Bianco Lunos, 1918-22. First edition, very rare presentation offprints (with ‘Separate Copy’ printed on the front wrappers), inscribed by Bohr to Kasimir Fajans, and from the collection of The Garden Ltd., of this fundamental work in which Bohr first gave a clear formulation of, and fully utilized, his ‘correspondence..... More
Item #4920

[Lancaster, PA & New York, NY: American Institute of Physics for the American Physical Society, 1939. First edition, extremely rare offprint issue, of arguably Bohr’s most important paper on nuclear fission, the first recognition of the crucial importance played by uranium-235, the only isotope found in nature capable of sustaining..... More
Item #5037

Paris: Gauthier-Villars, 1926; 1928. First edition of these expanded presentations of the ideas in de Broglie’s epoch-making doctoral thesis on the quantum theory, which, Einstein said, “lifted a corner of the great veil” (Isaacson, Einstein: His Life and Universe, p. 327). In that work he developed the startling and revolutionary..... More
Item #4527

Lancaster, PA: American Physical Society, 1935. First edition, very rare offprint, of the famous ‘EPR paper’, one of the most discussed and debated papers of modern physics, and the foundation for the new fields of quantum computing and cryptography. “In the May 15, 1935 issue of Physical Review Albert Einstein..... More
Item #5045

Leipzig: Barth, 1906. First edition, rare author’s presentation offprint with “Überricht von dem Verfasser” printed on the front wrapper, of the expanded version of Einstein’s doctoral thesis, ranked by his biographer Abraham Pais as being on the same level as his 1905 papers on relativity, the light quanta and Brownian..... More
Item #5071

Berlin: Königlichen Akademie der Wissenschaften, 1924; 1925; 1925. First editions, the rare author’s presentation offprint issues with ‘Ūberreicht vom Verfasser’ printed on front wrappers, of Einstein’s three papers on Bose-Einstein statistics, Einstein’s “last major innovative contribution to physics” (Pais, p. 343), containing, among other things, Einstein’s derivation of the Bose-Einstein..... More
Item #5065

Leipzig: Barth, 1907. First edition, rare author’s presentation offprint with “Überreicht vom Verfasser” printed on front wrapper, of “Einstein’s third stage in his investigation of Brownian motion. In the first stage (1905) he obtained the explanation of the observed zigzag motion of suspended particles. In the second stage (1906) he..... More
Item #5069

Leipzig: Barth, 1906. First edition, rare author’s presentation offprint with “Überreicht vom Verfasser” printed on front wrapper, of this brilliant follow-up to Einstein’s landmark 1905 paper on the photoelectric effect. In the 1905 paper, ‘On a heuristic point of view concerning the production and transformation of light,’ Einstein had explained..... More
Item #5070

[Lancaster, PA & New York, NY: American Institute of Physics for the American Physical Society, 1939]. First edition, extremely rare offprint, inscribed by Feynman, of Feynman’s senior undergraduate thesis at MIT, a fundamental discovery “that has played an important role in theoretical chemistry and condensed matter physics” (Selected Papers, p...... More
Item #4833

Berlin: Springer, 1926. First edition of Gordon’s account of the ‘Klein-Gordon equation’ (‘KG equation’ in what follows), the first attempt at unifying wave mechanics with special relativity. The KG equation was discovered by several authors independently, the first being the Swedish physicist Oskar Klein, although the equation appeared only incidentally..... More
Item #4497