The difference between the refractive indexes of the ordinary and the extraordinary ray in quartz is . 009, and in a rock-section about 1 / 500 of an inch thick this mineral gives grey and white polarization colours; nepheline with weaker double refraction gives dark grey; augite on the other hand will give red and blue, while calcite with the stronger double refraction will appear pinkish or greenish white.
42.
Among the subjects were the transit of Mercury, the Aurora Borealis, the figure of the Earth, the observation of the fixed stars, the inequalities in terrestrial gravitation, the application of mathematics to the theory of the telescope, the limits of certainty in astronomical observations, the solid of greatest attraction, the cycloid, the logistic curve, the theory of comets, the tides, the law of continuity, the double refraction micrometer, and various problems of spherical trigonometry.
43.
Few would dispute the verdict of James David Forbes, an editor of the eighth edition of the " Encyclop�dia Britannica " : " His scientific glory is different in kind from that of Young and Fresnel; but the discoverer of the law of polarization of biaxial crystals, of optical mineralogy, and of double refraction by compression, will always occupy a foremost rank in the intellectual history of the age . " In addition to the various works of Brewster already mentioned, the following may be added : " Notes and Introduction to Carlyle's translation of Legendre's Elements of Geometry " ( 1824 ); " Treatise on Optics " ( 1831 );"
How to say double refraction in Hindi and what is the meaning of double refraction in Hindi? double refraction Hindi meaning, translation, pronunciation, synonyms and example sentences are provided by Hindlish.com.
