Polarisation of LightMacmillan and Company, 1891 - 151 páginas |
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Página 38
... retardation 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 ...
... retardation 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 ...
Página 39
... retardation of a fraction of a wave length 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 ...
... retardation of a fraction of a wave length 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 ...
Página 40
William Spottiswoode. of phenomena due to gradually increasing retardation will be produced . This is easily seen to consist of a series of tints due to the successive extinction of each of the rays , commencing with the violet and ...
William Spottiswoode. of phenomena due to gradually increasing retardation will be produced . This is easily seen to consist of a series of tints due to the successive extinction of each of the rays , commencing with the violet and ...
Página 49
... retardation being very nearly the same , absolute quantity for all rays will , as in the case of plane polarisation , be a different fraction of the wave length for rays of different colours , and will be greater for the shorter waves ...
... retardation being very nearly the same , absolute quantity for all rays will , as in the case of plane polarisation , be a different fraction of the wave length for rays of different colours , and will be greater for the shorter waves ...
Página 63
... retardation amounts to an integral number of three - quarter wave lengths or not . It thus appears that a plate of mica , or " quarter undulation plate , " which retards one of the sets of waves into which it divides an incident set by ...
... retardation amounts to an integral number of three - quarter wave lengths or not . It thus appears that a plate of mica , or " quarter undulation plate , " which retards one of the sets of waves into which it divides an incident set by ...
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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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