Elementary Treatise on the Wave-theory of LightLongman, Brown, Green, Longmans, and Roberts, 1857 - 208 من الصفحات |
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الصفحة 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 ...
الصفحة 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 ...
الصفحة 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 ...
الصفحة 35
... found that , if the 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 ,, 古,古,景, 3 , 1 , D 2 DISPERSION . 35.
... found that , if the 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 ,, 古,古,景, 3 , 1 , D 2 DISPERSION . 35.
الصفحة 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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according alternate angle aperture appear Author axes axis bands beam bodies centre cloth coincides colours common complete consequently corresponding crown 8vo crystal dark David Brewster depends determined difference of phase direction distance divided double refraction edge Edition effect elliptically emergent equal ether experiment extreme fact follows force former Fresnel fringes given glass hand History Illustrations inclined increases intensity interference interval latter length less luminous manner medium metal molecules nature observed opposite optic ordinary origin parallel particles passing pencils perpendicular phase phenomena plane of incidence plane of polarization plate portions position Post 8vo principle prism produced propagated ratio reflected light reflexion refraction respectively result revised rings separated shadow side single space spectrum square substance successive supposed surface theory thickness tion transmitted transparent vary velocity vibrations vols wave Woodcuts
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