Polarisation of LightMacmillan and Company, 1891 - 151 páginas |
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Página 3
... thicker plates without loss of light . If we take a plate of tourmalin cut parallel to a particular direction within the crystal called the optic axis ( the nature and properties of which will be more particularly explained hereafter ) ...
... thicker plates without loss of light . If we take a plate of tourmalin cut parallel to a particular direction within the crystal called the optic axis ( the nature and properties of which will be more particularly explained hereafter ) ...
Página 4
... thickness of the crystal ; in Fig . 2 it indicates the complete extinction of the light . The same alternation of brightness and extinction will continue for every right angle through which the moving plate is turned . Now it is to be C ...
... thickness of the crystal ; in Fig . 2 it indicates the complete extinction of the light . The same alternation of brightness and extinction will continue for every right angle through which the moving plate is turned . Now it is to be C ...
Página 26
... thickness . If the plate does not fill the entire field of view , two images of the plate will be seen , the one larger , as viewed directly , the other smaller , as viewed after reflexion from the 26 [ CHAP . POLARISATION OF LIGHT .
... thickness . If the plate does not fill the entire field of view , two images of the plate will be seen , the one larger , as viewed directly , the other smaller , as viewed after reflexion from the 26 [ CHAP . POLARISATION OF LIGHT .
Página 27
... thickness of the crystal , the other that due to a plate of the same crystal , but of double the thickness . It was mentioned in Chapter I. that light might from various circumstances become partially polar- ised ; and as this is not ...
... thickness of the crystal , the other that due to a plate of the same crystal , but of double the thickness . It was mentioned in Chapter I. that light might from various circumstances become partially polar- ised ; and as this is not ...
Página 30
... thickness . If such a plate be placed between the polariser and analyser when crossed , it will be found that there are two posi- tions , at right angles to each other , in which , if the selenite be placed , the field will remain dark ...
... thickness . If such a plate be placed between the polariser and analyser when crossed , it will be found that there are two posi- tions , at right angles to each other , in which , if the selenite be placed , the field will remain dark ...
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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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