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The effect of pressure on the modulus of rigidity has been determined for five metals and two glasses, to 4000 kg/cm2, by a dynamical method. The corrections due to the viscous motion of the pressure medium are computed approximately and shown to be negligible. Absolute values of the dynamical Young's modulus and modulus of rigidity are also given, and the derived compressibilities compared with directly measured compressibilities.
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Francis Birch (1937) studied this question.
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