Low-temperature cameras

Cameras in which powder photographs of substances maintained at high temperatures may be taken are much used, especially in metal-lurgy other special cameras have been designed for low temperatures. For reviews of high and low temperature cameras, see the chapters by Goldschmidt and Steward in X-ray Diffraction by Polycrystalline Materials, ed, Peiser, Rooksby, and Wilson (1955). A powder camera for high pressures is described by Frevel (1935). 

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