Elementary Treatise on the Wave-theory of LightLongman, Brown, Green, Longmans, and Roberts, 1857 - 208 страници |
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Страница vii
... luminous bodies in all directions . ( 4 ) Non - luminous bodies transpa- rent and opaque . ( 5 ) Light is propagated in right lines ; ray of light . ( 6 ) Intensity of light emanating from a luminous point varies inversely as square of ...
... luminous bodies in all directions . ( 4 ) Non - luminous bodies transpa- rent and opaque . ( 5 ) Light is propagated in right lines ; ray of light . ( 6 ) Intensity of light emanating from a luminous point varies inversely as square of ...
Страница 1
... luminous ; those of the latter , non - luminous . The Sun and the fixed stars are all luminous bodies ; terrestrial bodies are luminous , in the states of incan- descence , combustion , or phosphorescence . Non - luminous bodies acquire ...
... luminous ; those of the latter , non - luminous . The Sun and the fixed stars are all luminous bodies ; terrestrial bodies are luminous , in the states of incan- descence , combustion , or phosphorescence . Non - luminous bodies acquire ...
Страница 2
... luminous body or not . This strange hypothe- sis held its ground for many centuries . The Arabian astro- nomer , Alhazen , who lived in the latter part of the eleventh century , seems to have been the first to refute it , and to prove ...
... luminous body or not . This strange hypothe- sis held its ground for many centuries . The Arabian astro- nomer , Alhazen , who lived in the latter part of the eleventh century , seems to have been the first to refute it , and to prove ...
Страница 3
... luminous point , is called in optics a ray . ( 6 ) In a perfectly transparent medium , the intensity of the light proceeding from a luminous point varies inversely as the square of the distance . This is easily proved , if light be ...
... luminous point , is called in optics a ray . ( 6 ) In a perfectly transparent medium , the intensity of the light proceeding from a luminous point varies inversely as the square of the distance . This is easily proved , if light be ...
Страница 5
... luminous surfaces inversely . For , if i and i ' denote the absolute brightnesses of the two lights , a and a ' the areas of the luminous surfaces , and d and d ' their distances from the paper , the intensities of illumination are ai ...
... luminous surfaces inversely . For , if i and i ' denote the absolute brightnesses of the two lights , a and a ' the areas of the luminous surfaces , and d and d ' their distances from the paper , the intensities of illumination are ai ...
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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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