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Studies in radioactivity (book) plus 3 offprints

Bragg, William H.

Publication Date: 1912
Soft cover
From Jeremy Norman's historyofscience (Novato, CA, U.S.A.)

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Bragg, William Henry (1862-1942) (1) (with H. L. Porter) Energy transformations of x-rays. Offprint from Proc. Roy. Soc., A, 85 (1911). 8vo. 349-365pp. Text diagrams. 254 x 179 mm. Original printed wrappers, sunned, dampstained, a few chips. Light foxing & dampstaining. (2) Studies in radioactivity. 8vo. x, [2], 196, 2 (adverts.)pp. Text illustrations. London: Macmillan, 1912. 222 x 147 mm. Original blue cloth, slight wear at extremities. Light browning, otherwise fine. (3) Tyndall's experiments on magne-crystallic action. Supplement to Nature, no. 3001 (May 7, 1927). 4to. 12pp. Text illustrations. 270 x 194 mm. Without wrappers as issued, some soiling & wear. (4) Bragg, William Lawrence (1890-1971). L'intensite de reflexion des rayons X. 8vo. N.p., n. d. (1928 or later). 254 x 167 mm. (uncut and mostly unopened). Original wrappers, small tear in front wrapper, light soiling & browning. Together 4 items. First / First Separate Editions. The Braggs, father and son, are best known for originating the field of x-ray crystallography, which has become an essential analytic tools of physics, chemistry and molecular biology. Prior to 1912, scientists had very little knowledge about the solid state of matter, but in 1912 came the Friedrich-Knipping-Laue paper showing that x-rays can be diffracted by crystals. The Braggs used Laue's discovery to determine the actual positions of atoms in crystals, with Lawrence Bragg providing the theoretical basis for crystal structure analysis and William Henry Bragg contributing the x-ray spectrometer, which measures the strength of an x-ray beam reflected from a crystal face. In 1915 the Braggs shared the Nobel Prize for physics for their studies of crystal structure by means of x-rays. Between 1904 and 1912, prior to his work in x-ray crystallography, the elder Bragg was engaged in a series of investigations in radioactivity, particularly "the phenomena attending the passage of the , , and X rays through matter" (Studies in Radioactivity, p. v). No. (1), Bragg's paper on the energy transformation of x-rays, was written during the period when Bragg was advocating a corpuscular model of the x-ray, a position he abandoned after learning of the Laue-Friedrich-Knipping interference phenomenon. Among the important results of Bragg's investigations was Bragg's inference regarding the interaction of high-frequency radiation with matter: that "the ionization accompanying the passage of X rays and rays through matter is not produced by the direct action of these rays, but is entirely a secondary effect occurring only after the ray has been converted into a high-speed electron" (DSB). A detailed account of Bragg's radioactivity investigations is given in his Studies in Radioactivity (no. [2]). Of the remaining papers offered here, no. (3) is a discussion of 19th-century physicist John Tyndall's discoveries relating to the behavior of crystals in a magnetic field examined in the light of the Braggs' x-ray analysis of crystal structure; no. (4), by the younger Bragg, is a paper on the intensity of x-ray refraction, followed by a discussion of the paper in which the physicists Debye, Heisenberg, Lorentz, Compton, Kramers, Pauli and Dirac took part. DSB. Weber, Pioneers of Science, pp. 51-55. Magill, The Nobel Prize Winners: Physics, pp. 204-13. Bookseller Inventory # 38542

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Title: Studies in radioactivity (book) plus 3 ...

Publication Date: 1912

Binding: Soft cover

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