Elementary Treatise on the Wave-theory of LightLongmans, Green, 1873 - 247 страници |
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Страница 3
... conjointly . Hence if a denote the area of the luminous surface , and i the quan- tity emitted from a single point , which is a measure of the absolute brightness , the intensity of the illumination , at B 2 PROPAGATION OF LIGHT . 3.
... conjointly . Hence if a denote the area of the luminous surface , and i the quan- tity emitted from a single point , which is a measure of the absolute brightness , the intensity of the illumination , at B 2 PROPAGATION OF LIGHT . 3.
Страница 5
... 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 sin 0 a'i ' sin d2 and d / 2 respectively ; and ...
... 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 sin 0 a'i ' sin d2 and d / 2 respectively ; and ...
Страница 7
... denoted by a , the velocity of light will be S V = 2ax 2np . If n be the number of revolutions in a second correspond- ing to the mth eclipse , the velocity of light will be given by the formula , V = 2a × 2np 2m - 1 ' The apparatus ...
... denoted by a , the velocity of light will be S V = 2ax 2np . If n be the number of revolutions in a second correspond- ing to the mth eclipse , the velocity of light will be given by the formula , V = 2a × 2np 2m - 1 ' The apparatus ...
Страница 14
... phases of vibration ; and it is therefore the space through which the vibratory movement is propagated in the time of a single vibration . Accordingly , if λ denote the length of the wave , T 14 PROPAGATION OF LIGHT .
... phases of vibration ; and it is therefore the space through which the vibratory movement is propagated in the time of a single vibration . Accordingly , if λ denote the length of the wave , T 14 PROPAGATION OF LIGHT .
Страница 15
Humphrey Lloyd. if λ denote the length of the wave , T the time of vibration , and v the velocity of wave - propagation , λ = VT . ( 17 ) In the foregoing illustration we have assumed the vibratory motion of the molecules of the ether ...
Humphrey Lloyd. if λ denote the length of the wave , T the time of vibration , and v the velocity of wave - propagation , λ = VT . ( 17 ) In the foregoing illustration we have assumed the vibratory motion of the molecules of the ether ...
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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