J.J. Thomson. "Ionization by Moving Electrified Particles". in The London, Edinburgh and Dublin Philosophical Magazine..., Sixth Series, Vol. 23, No. 136, April 1912, double number, the article occupying pp 449-458 in the issue of pp 449-688. The (highly cited, 440+) issue offered in the original wrappers. Also includes some significant work by murders' row of great physicists O.W. Richardson, George von Hevesy, Karl T. Compton, William H. Bragg, H.A. Wilson, , C.G. Darwin, Norman Campbell, among others. Very nice copy, with some chipping along the edges of the spine top and bottom. $350
“Ionization by Moving Electrified Particles”, JJ Thomson. “A theoretical paper developing a theory based on the following assumptions: Cathode or positive rays when they pass through an atom repel or attract the corpuscles in it and thereby give kinetic energy to them. When the energy imparted to a corpuscle is greater than a certain definite value the value required to ionize the atom a corpuscle escapes from the atom producing a free corpuscle and positively charged atom. Philos Mag April 1912." in Electrical World, May 11, 1912
“Three characteristics of these Applications [of Dynamics to Physics and Chemistry, 1888] deserve notice. For one, Thomson shows himself a master of the literature, not excluding the pertinent papers of German experimentalists. He was to keep fully abreast of the journals (from which he sometimes took ideas whose origin he later forgot) until World War I... Second, the moderate phenomenology of the Applications, a work which eschews the specification of dynamical processes, recurs in much of Thomson’s later work. His pioneering theory of the conduction of electricity in gases, for example, merely assumes the existence of ions, and describes their behavior not in terms of the electrodynamics of their interactions, but via parameters–especially measures of mobility and recombination–to be fixed by experiment. Only later [the paper offered here] did he sketch a theory of the process of ionization.”--Dictionary of Scientific Biography
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