Elementary Treatise on the Wave-theory of LightLongmans, Green, 1873 - 247 страници |
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Страница 14
... diverging from the same centre ; and let us sup- pose that they are each made to undulate by a disturbing action at that centre , acting in a similar manner , and in the same degree , on all . It is obvious , then , that an undulation ...
... diverging from the same centre ; and let us sup- pose that they are each made to undulate by a disturbing action at that centre , acting in a similar manner , and in the same degree , on all . It is obvious , then , that an undulation ...
Страница 17
... diverging from any luminous origin must decrease inversely as the square of the distance ; for , from the laws of wave propaga- tion , it appears that the space of vibration diminishes in the inverse simple ratio of the distance . Thus ...
... diverging from any luminous origin must decrease inversely as the square of the distance ; for , from the laws of wave propaga- tion , it appears that the space of vibration diminishes in the inverse simple ratio of the distance . Thus ...
Страница 30
... diverging from the several points of the bounding surface . But , by the principle of the coexistence of small motions , the agitation of any particle of either medium is the sum of the agitations sent there at the same instant from ...
... diverging from the several points of the bounding surface . But , by the principle of the coexistence of small motions , the agitation of any particle of either medium is the sum of the agitations sent there at the same instant from ...
Страница 82
... diverging cones of light will be thus produced ; and each of these cones will be surrounded by a penumbra in which the illumination is only partial . Now let these two beams be received on a screen at some distance , where the penumbras ...
... diverging cones of light will be thus produced ; and each of these cones will be surrounded by a penumbra in which the illumination is only partial . Now let these two beams be received on a screen at some distance , where the penumbras ...
Страница 83
... diverging from a distant point , and falling on the lens , will converge to two near points , and will be in a condition to interfere after divergence . The intensity of the light is much greater than that emanating from two small ...
... diverging from a distant point , and falling on the lens , will converge to two near points , and will be in a condition to interfere after divergence . The intensity of the light is much greater than that emanating from two small ...
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amplitudes angle of incidence angle of polarization aperture axes bands beam bodies bright bands Canada balsam centre circularly-polarized coincides colours common light corresponding Crown 8vo crystal denote difference of phase diffracted direction distance diverging double refraction edge Edition elasticity ellipse equal ether extraordinary ray Fresnel fringes glass Iceland spar incident light incident ray inclined index of refraction intensity interference interval of retardation length light reflected luminous origin medium metal molecules observed optic axis ordinary ray parallel particles phenomena plane of incidence plane of polarization plane of reflexion plane-polarized plate polarized light polarized ray polarizing angle portions position principal section prism produced propagated PUBLISHED BY LONGMANS R. A. Proctor ratio reflected light reflected pencil refracted rays refractive index refrangibility result rhomb right angles rings second surface sin² spectrum substance theory thickness tion transmitted traversed undulation vary velocity vibrations vols wave wave-theory Woodcuts