Polarisation of LightMacmillan and Company, 1891 - 151 páginas |
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Página 9
... equal to the refractive index . Simple geometrical considerations , combined with the usual expressions for the laws of reflexion and refraction , will show that this relation between the polarising angle and the refractive index may be ...
... equal to the refractive index . Simple geometrical considerations , combined with the usual expressions for the laws of reflexion and refraction , will show that this relation between the polarising angle and the refractive index may be ...
Página 21
... equal to that of the spar . The rays passing through the crystal prism being perpendicular to the optic axis , undergo the greatest separation possible . And the chromatic dispersion caused by that prism is usually corrected or neutral ...
... equal to that of the spar . The rays passing through the crystal prism being perpendicular to the optic axis , undergo the greatest separation possible . And the chromatic dispersion caused by that prism is usually corrected or neutral ...
Página 38
... equal to one or to any whole number of wave lengths . Turn the wires about their middle lines M N M'N ' until they meet half - way , i.e. in a position inclined at 45 ° to their original directions ; this will represent the vibrations ...
... equal to one or to any whole number of wave lengths . Turn the wires about their middle lines M N M'N ' until they meet half - way , i.e. in a position inclined at 45 ° to their original directions ; this will represent the vibrations ...
Página 39
... equal to the amount of shift . And on turning the wires as before , we should find that in one image the waves partially combine , and that in the other they partially interfere . The shifting of the wires would represent either the ...
... equal to the amount of shift . And on turning the wires as before , we should find that in one image the waves partially combine , and that in the other they partially interfere . The shifting of the wires would represent either the ...
Página 42
... second combination the angles of the wedges will compensate one another , and the result will be equivalent to a uniform plate whose thickness is equal to the sum of the mean thicknesses of the wedges 42 [ CHAP . POLARISATION OF LIGHT .
... second combination the angles of the wedges will compensate one another , and the result will be equivalent to a uniform plate whose thickness is equal to the sum of the mean thicknesses of the wedges 42 [ CHAP . POLARISATION OF LIGHT .
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Términos y frases comunes
analyser be turned angle of incidence axis bands beam bi-axal crystals biquartz centre circular polarisation circularly coincide complementary complementary colours consequently Crown 8vo crystal plate cut perpendicularly dark difference of phase different colours double refraction effect ellipses equal ether exhibit extinguished field of view film glass hyperbolas Iceland spar inclined instrument intermediate laminæ left-handed mean-line motion Nicol Nicol's prism oblique opposite optic axes ordinary ordinary ray orthorhombic overlap pair parallel particle perpendicular phenomena placed plane containing plane of polarisation plane of reflexion plane of vibration plane-polarised plate of quartz polar clock polariscope polarised light polariser and analyser polarising angle position principal section produced quadrants quarter-undulation plate quartz plate rectilinear reflected ray retardation rhombohedron right angles right-handed rotation secondary figures seen selenite silver plate spectrum straight lines successive polarisation surface thickness tints tion traversed tube turned round uni-axal velocity wave length wedges
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