Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 711
mentary, and the black cross changesinto white. The angle between the optic axes in the case of nitre is only 5° 20,and hence the whole system can be seen at once. But when the angle exceeds20° to 25°, the two systems of curves cannot be simultaneously seen. Thereis then only one dark brush instead… … -682] Colours produced by Compressed or Unannealed Glass 693 referred them to the kind of curve know n in geometry as the lenmiscate, instrict accordance with the principles of the undulatory theory of hght. The observation of the system of rings which plates of crystals give inpolarised light…
Physics
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