Elementary Treatise on the Wave-theory of LightLongman, Brown, Green, Longmans, and Roberts, 1857 - 208 страници |
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Страница 21
... sides . ( 28 ) We are now enabled to determine the refractive index of a transparent solid experimentally . The first step of this process is to polish two plane faces , inclined to one another at a sufficient angle , and to measure ...
... sides . ( 28 ) We are now enabled to determine the refractive index of a transparent solid experimentally . The first step of this process is to polish two plane faces , inclined to one another at a sufficient angle , and to measure ...
Страница 31
... sides which are perpendicular to the axis of the prism being rectilinear and parallel , and the extremities semicircular . The breadth of this image , or spectrum ( as it is called ) , is equal to the diameter of the unrefracted image ...
... sides which are perpendicular to the axis of the prism being rectilinear and parallel , and the extremities semicircular . The breadth of this image , or spectrum ( as it is called ) , is equal to the diameter of the unrefracted image ...
Страница 34
... sides . The mixture in the spectrum , therefore , varies as the breadth of the spectrum divided by its length ; and if the breadth can be diminished , the length remaining the same , the mixture will be diminished in pro- portion ...
... sides . The mixture in the spectrum , therefore , varies as the breadth of the spectrum divided by its length ; and if the breadth can be diminished , the length remaining the same , the mixture will be diminished in pro- portion ...
Страница 35
... whole length of the rectilinear side , AH , be taken as unit , the distances to the confines of the several colours , AB , AC , AD , & c . , will be denoted by the numbers ,, H G C B ,,, . Now the intervals AB , BC , CD D 2 DISPERSION . 35.
... whole length of the rectilinear side , AH , be taken as unit , the distances to the confines of the several colours , AB , AC , AD , & c . , will be denoted by the numbers ,, H G C B ,,, . Now the intervals AB , BC , CD D 2 DISPERSION . 35.
Страница 40
... sides , formed of parallel glass , are moveable on hinges , and may be inclined to one another at any angle . It is closed on the other two sides by metallic cheeks , to which the moveable sides are accurately fitted . The vessel being ...
... sides , formed of parallel glass , are moveable on hinges , and may be inclined to one another at any angle . It is closed on the other two sides by metallic cheeks , to which the moveable sides are accurately fitted . The vessel being ...
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angle of incidence aperture axes azimuth bands beam bright bands centre circularly polarized coincides colours common light corresponding Crown 8vo crystal dark denote deviation diameter difference of phase diffraction direction distance diverging double refraction edge effect elasticity elliptically polarized equal ether Fresnel fringes glass Iceland spar inci incident light incident ray inclined intensity interference interval of retardation Jamin length light reflected luminous origin medium metal mirror molecules Newton observed opposite optic axis parallel particles perpendicular plane phenomena plane of incidence plane of polarization plane of reflexion plane-polarized polarized light polarized ray polarizing angle portions position Post 8vo principal section prism produced propagated ratio reflected light reflected pencil refracted rays refractive index refrangibility result rhombohedron right angles rings Second Edition shadow spectrum square substance thickness tion transmitted traversed undulation vary velocity velocity of propagation vibrations vols wave-theory Woodcuts
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