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Showing papers by "Henry Eyring published in 1953"



Journal ArticleDOI
TL;DR: In this paper, an integrated equation for the three-center nuclear attraction integral has been formulated in a general way for Slater-type atomic s orbitals arising from any integral principle quantum number.
Abstract: An integrated equation for the three‐center nuclear attraction integral has been formulated in a general way for Slater‐type atomic s orbitals arising from any integral principle quantum number. No restrictions are placed on the effective nuclear charges or the interatomic distances. The formulation is expressed linearly in terms of certain auxiliary functions which are discussed in detail. Numerical values of some of the auxiliary functions for the triatomic hydrogen molecule are cited as examples of this exact formulation. An alternative approximate formulation is also given.

27 citations


Journal ArticleDOI
TL;DR: BenNETT, JUPNIK, OSTERBERG, and RICHARDS as discussed by the authors combined the work of four scientists who have made outstanding contributions to the theory, instrumentation, and application of the phase microscope.
Abstract: By ALVA BENNETT, HELEN JUPNIK, HAROLD OSTERBERG, and OSCAR W. RICHARDS, all with American Optical Company. This new book combines the work of four scientists who have made outstanding contributions to the theory, instrumentation, and application of the phase microscope. It describes phase microscopy fully, including principles, operation, adjustments, use, and various applications. 1951. 320 pages. $7.50.

19 citations


Journal ArticleDOI
TL;DR: In this article, it was shown that thermal diffusion is accompanied by a mass flow, which does not vanish even after the steady state has been reached, and this gives rise to the interesting possibility that the heat of activation for self-diffusion can be resolved into its components.
Abstract: Just as is the case with ordinary diffusion, thermal diffusion is accompanied by a mass flow, which does not vanish even after the steady state has been reached. As a result of this mass motion the thermal diffusion coefficients of both components in a binary mixture enter into the expression for the steady‐state mole fraction gradient of either one, so that a knowledge of the latter is not sufficient, in general, to resolve the total heat of activation for diffusion into a heat of hole formation and a heat of activation for jumping. Mass flow should exist even in pure liquids in the presence of a temperature gradient, and this gives rise to the interesting possibility that the heat of activation for self‐diffusion can be resolved into its components.

17 citations