Elementary Treatise on the Wave-theory of Light |
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Page 21
... sides . ( 28 ) We are now enabled to determine the refractive index of a transparent solid experimentally . 1 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 . 1 The first step of this process is to polish two plane faces , inclined to one another at a sufficient angle , and to measure ...
Page 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 ...
Page 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 ...
Page 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 ,, ,,, . 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 ,, ,,, . Now the intervals AB , BC , CD D 2 DISPERSION . 35.
Page 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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Common terms and phrases
amplitudes angle of incidence aperture Arago axes azimuth beam bright bright band centre circularly polarized coincides colours common light complete corresponding crystal deduced denote deviation difference of phase diffraction direction distance diverging double refraction edge effects elasticity elliptically polarized equal ether Fresnel fringes glass History inci incident light incident ray inclined intensity interference interval of retardation Jamin latter length light polarized light reflected luminous origin medium 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 principle prism produced propagated ratio reflected light refracted pencils refracted rays refractive index refrangibility result rings Second Edition shadow spectrum Square crown 8vo substance theory thickness tion transmitted traversed undulation vary velocity vibrations vis viva vols wave-theory Woodcuts
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