The optic axes emerge at the apices of the hyperbolas and may be surrounded by colored rings, though owing to the thinness of minerals in rock sections these are only seen when the double refraction of the mineral is strong.
32.
By taking the average, or the highest color given by any mineral, the relative value of its double refraction can be estimated; or if the thickness of the section be precisely known the difference between the two refractive indexes can be ascertained.
33.
Conceptually different experiments that also attempted to detect the motion of the aether were the Trouton Noble experiment ( 1903 ), whose objective was to detect the experiments of Rayleigh and Brace ( 1902, 1904 ), to detect double refraction in various media.
34.
In telecommunication, "'magneto-ionic double refraction "'is the combined effect of the Earth's magnetic field and atmospheric ionization, whereby a linearly polarized wave entering the ionosphere is split into two components called the ordinary wave and extraordinary wave.
35.
The low index of refraction and the feeble double refraction in nepheline are nearly the same as in quartz; but since in nepheline the sign of the double refraction is negative, while in quartz it is positive, the two minerals are readily distinguished under the microscope.
36.
The low index of refraction and the feeble double refraction in nepheline are nearly the same as in quartz; but since in nepheline the sign of the double refraction is negative, while in quartz it is positive, the two minerals are readily distinguished under the microscope.
37.
If now it be used to produce compensation or complete extinction in any doubly refracting mineral section, we can ascertain what is the strength of the double refraction of the section because it is obviously equal and opposite to that of a known part of the quartz wedge.
38.
In 1832, by the aid of a particular hypothesis as to the constitution of the ether, he reached by a rigorous dynamical calculation results agreeing with those obtained by Augustin Louis Cauchy, and succeeded in deducing laws of double refraction closely resembling those of Augustin-Jean Fresnel.
39.
In addition, a distinct form of double refraction occurs in cases where the optic axis is not along the refracting surface ( nor exactly normal to it ); in this case the electric polarization of the birefringent material is not exactly in the direction of the wave's electric field for the extraordinary ray.
40.
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.
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.
