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to each compound belongs a surface

*
Fig. 11. Photograph of the solid T-X Model.
Fig. 12. Photograph of the solid P-X model.
(squared, minus captions within image)
illustrating George W. Morey. “The Ternary System H₂0-K₂Si0₃-Si0₂.” (Microscopic study by C. N. Fenner.) Journal of the American Chemical Society 39:6 (June 1917) : 1173-1229
Stanford copy, no date of digitization

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“To each compound belongs a surface, and, as before, intersection of two surfaces gives a boundary curve, of three surfaces, an invariant point. On account of the extreme range of pressure in this system, it was necessary to use a variable scale.”
p 1222
 

25 August 2014

tags:
curves; variables; reduction of variables; solids; surfaces
G. W. Morey, C. N. Fenner, “The Ternary System” (1917)