Polarisation of LightMacmillan and Company, 1891 - 151 páginas |
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Página 8
... appear less bright than in others . If the angle at which the original rays fall upon the reflecting surface be varied , it will be found that the amount of alteration in brightness of the light seen through the revolving tourmalin ( or ...
... appear less bright than in others . If the angle at which the original rays fall upon the reflecting surface be varied , it will be found that the amount of alteration in brightness of the light seen through the revolving tourmalin ( or ...
Página 15
... appears to be substantially true in transparent media ; but in proportion as a substance is more opaque , so do its molecules take up part of the motion of the ether , and convert the light into heat ( the principle of vis viva ) . ( 2 ...
... appears to be substantially true in transparent media ; but in proportion as a substance is more opaque , so do its molecules take up part of the motion of the ether , and convert the light into heat ( the principle of vis viva ) . ( 2 ...
Página 18
... appears single , as if passed through a block of glass . The direction in question ( viz . the line a b itself , and m FIG . 9 . all lines passing through any part of the crystal parallel to a b ) is called the optic axis of the crystal ...
... appears single , as if passed through a block of glass . The direction in question ( viz . the line a b itself , and m FIG . 9 . all lines passing through any part of the crystal parallel to a b ) is called the optic axis of the crystal ...
Página 31
... appear ; not , however , the original tint , but its complementary . And , in fact , there is no more sure way of producing colours complementary to one another than that here used . A general explanation of this change of colour is ...
... appear ; not , however , the original tint , but its complementary . And , in fact , there is no more sure way of producing colours complementary to one another than that here used . A general explanation of this change of colour is ...
Página 32
... appear double . Suppose that the two images are coloured red and green respec- tively ; then one of the shadows will be due to the shutting off of the red light , and the other to that of the green . But in the first case the space ...
... appear double . Suppose that the two images are coloured red and green respec- tively ; then one of the shadows will be due to the shutting off of the red light , and the other to that of the green . But in the first case the space ...
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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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