A Treatise on Physical OpticsDeighton, Bell, 1892 - 411 páginas |
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Página xii
... normal to the wave - front makes with the optic axes 109. Determination of the equation of Fresnel's wave - surface 110. Traces of the wave - surface on the coordinate planes 111. Singular points . Ray axes . 117 · • 118 • 119 • 120 112 ...
... normal to the wave - front makes with the optic axes 109. Determination of the equation of Fresnel's wave - surface 110. Traces of the wave - surface on the coordinate planes 111. Singular points . Ray axes . 117 · • 118 • 119 • 120 112 ...
Página xxii
... normal • 385 454. Experimental results in this case 386 455. Kerr's law 386 456. Experiments when the lines of magnetic force are parallel to the reflector 386 457. Description of the arrangements employed 387 458. Experimental results ...
... normal • 385 454. Experimental results in this case 386 455. Kerr's law 386 456. Experiments when the lines of magnetic force are parallel to the reflector 386 457. Description of the arrangements employed 387 458. Experimental results ...
Página 40
... normal incidence , the intensity will be a maximum when R1 = nλ = t ( μ ' - 1 ) . Now if Newton's rings be formed by a prism and a lens , the radii of the rings will be equal to ( 2R ) ; whence if p be the radii of the bright rings seen ...
... normal incidence , the intensity will be a maximum when R1 = nλ = t ( μ ' - 1 ) . Now if Newton's rings be formed by a prism and a lens , the radii of the rings will be equal to ( 2R ) ; whence if p be the radii of the bright rings seen ...
Página 44
... normal to ds drawn outwards and with the direction of vibration respectively , and c sin 27 Vt is the displacement of the primary wave at the plane of resolution . In all cases of diffraction , the illumination is insensible unless the ...
... normal to ds drawn outwards and with the direction of vibration respectively , and c sin 27 Vt is the displacement of the primary wave at the plane of resolution . In all cases of diffraction , the illumination is insensible unless the ...
Página 72
... normal to the grating , the disturbance at any point Q may be obtained by writing sini + sin for sin in ( 41 ) . Hence the position of the mth spectrum is determined by ( a + d ) ( sin i + sin 4 ) = mλ . A similar formula holds good ...
... normal to the grating , the disturbance at any point Q may be obtained by writing sini + sin for sin in ( 41 ) . Hence the position of the mth spectrum is determined by ( a + d ) ( sin i + sin 4 ) = mλ . A similar formula holds good ...
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Términos y frases comunes
A₁ accordingly amplitude angle of incidence aperture axis bands biaxal crystal centre change of phase circularly polarized colours cos² critical angle diffraction direction of vibration displacement dx dy elastic ellipsoid elliptically polarized equal equations of motion ether extraordinary ray extraordinary wave follows formulæ Fresnel's glass Hence Iceland spar incident light index of refraction integral intensity light is incident light is polarized Lord Rayleigh medium Nicol normal obtain optic axes parallel perpendicular plane of incidence plane of polarization plate of quartz polarized light polarized perpendicularly polarizing angle prism produced quantity quartz reflected and refracted reflected light refracted wave rhomb right-handed rings rotation sin² spectrum suppose surface theory thickness transmitted transparent U₁ uniaxal crystal V₁ values velocity of propagation wave-front wave-length wave-surface whence whilst μ²
Pasajes populares
Página 372 - Nicol's prism turned in any way. [Shown.] (5) The spectrum of the reflected light is frequently found to consist almost entirely of a comparatively narrow band. When the angle of incidence is increased, the band moves in the direction of increasing refrangibility, and at the same time increases rapidly in width. In many cases the reflection appears to be almost total.
Página 356 - The difference between these numbers is greater than can be accounted for by errors of observation, and shows that our theories of the structure of bodies must be much improved before we can deduce their optical from their electrical properties. At the same time, I think that the agreement of the numbers is such that if no greater discrepancy were found between the numbers derived from the optical and...
Página 347 - To fill all space with a new medium whenever any new phenomenon is to be explained is by no means philosophical, but if the study of two different branches of science has independently suggested the idea of a medium, and if the properties which must be attributed to the medium in order to account for electromagnetic phenomena are of the same kind as those which, we attribute to the luminiferous medium in order to account for the phenomena of light, the evidence for the physical existence of the medium...
Página 347 - But the properties of bodies are capable of quantitative measurement. We therefore obtain the numerical value of some property of the medium, such as the velocity with which a disturbance is propagated through it, which can be calculated from electromagnetic experiments, and also observed directly in the case of light. If it should be found that the velocity of propagation of electromagnetic disturbances is the same as the velocity of light, and this not only in air, but in other transparent media,...