Points from Foregoing Letters

    Abstract

    THE ordinary form of quartz with trigonal symmetry changes at 575° to a form with hexagonal symmetry, the change being preceded by a progressive change of physical properties. Sir C. V. Raman and T. M. K. Nedungadi find an explanation for these effects as a result of an examination of the scattering of monochromatic light in quartz at various temperatures up to the transition point.

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    Points from Foregoing Letters. Nature 145, 152 (1940). https://doi.org/10.1038/145152d0

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