A Treatise on Physical OpticsDeighton, Bell, 1892 - 411 páginas |
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Página 8
... shown in the case of electro- magnetic waves , that the total energy is half electrostatic and half electrokinetic . If therefore we assume that a similar proposition is true in the case of the ether , with regard to whose physical ...
... shown in the case of electro- magnetic waves , that the total energy is half electrostatic and half electrokinetic . If therefore we assume that a similar proposition is true in the case of the ether , with regard to whose physical ...
Página 10
... shown that the latter supposition is the true one . We shall discuss this point in detail in subsequent chapters . We shall now show how two trains of waves , whose wave- lengths are equal , and whose planes of polarization are the same ...
... shown that the latter supposition is the true one . We shall discuss this point in detail in subsequent chapters . We shall now show how two trains of waves , whose wave- lengths are equal , and whose planes of polarization are the same ...
Página 15
... shown that PNV ( T - t ) . Hence all the secondary waves . which diverge from points between A and C will touch AC , which is accordingly the front of the reflected wave at the instant the incident wave has reached C. Since we have shown ...
... shown that PNV ( T - t ) . Hence all the secondary waves . which diverge from points between A and C will touch AC , which is accordingly the front of the reflected wave at the instant the incident wave has reached C. Since we have shown ...
Página 17
... shown in § 12 , that the superposition of two waves of light whose directions , wave - lengths , velocities of propagation and planes of polarization are the same , but whose amplitudes and phases are different , may either intensify or ...
... shown in § 12 , that the superposition of two waves of light whose directions , wave - lengths , velocities of propagation and planes of polarization are the same , but whose amplitudes and phases are different , may either intensify or ...
Página 31
... shown in a precisely similar manner , that the vibration which emerges at B , is represented by y = Acf ( sin + e2 sin ( +8 ) + e sin ( p + 28 ) + ............ .. } . Summing this series , and taking account of ( 1 ) , we shall find ...
... shown in a precisely similar manner , that the vibration which emerges at B , is represented by y = Acf ( sin + e2 sin ( +8 ) + e sin ( p + 28 ) + ............ .. } . Summing this series , and taking account of ( 1 ) , we shall find ...
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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,...