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Points from Foregoing Letters

Nature volume 141, page 1060 (11 June 1938) | Download Citation



THE dependence of heat conductivity of quartz on the size of the crystals has been determined by Prof. W. J. de Haas at very low temperatures (2·5°, 2·9° and 3·3°K.). The heat resistance was found to approach asymptotically a constant value. The author assumes that the resistance is due to scattering of the elastic waves by the surface and by the mosaic structure, and to scattering of the elastic waves by one another.

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