The Theory of OpticsLongmans, Green, and Company, 1901 - 546 pages |
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Autres éditions - Tout afficher
Expressions et termes fréquents
absorption according amplitude angle of incidence axes colors corresponding cos² crystal curve denotes determined dielectric constant difference of phase differential diffraction direction of vibration dispersion distance double refraction electric force electromagnetic elliptically polarized energy equal equation field of view focal length follows Fresnel's Hence incident light index of refraction intensity interference intersection ions isotropic lens light-vector magnetic force maxima and minima medium metals mirror Nicols numerical aperture object observed obtained optic axis Optik P₁ parallel perpendicular phenomena plane of incidence plane of polarization plane wave plane-polarized plate positive principal prism produced propagation quantity r₁ radiation rays reflected light respect rotation screen sin² spectral line substance theory thickness tion V₁ vector velocity of light wave front wave length wave normal wave surface zero θα ду дх
Fréquemment cités
Page 510 - Stefan-Boltzmann law states that the total energy of a black body is proportional to the fourth power of its absolute temperature.
Page 360 - R, of a plane surface of a substance is defined as the ratio of the intensity of the reflected light to that of the incident light for normal incidence.
Page v - My purpose is attained if these pages strengthen the reader in the view that optics is not an old and worn.out branch of physics, but that in it also there pulses a new life whose further nourishing must be inviting to everyone.
Page 521 - According to the kinetic theory of gases, the absolute temperature is proportional to the mean kinetic energy of the molecules.
Page 75 - If the force in the electric field is parallel to the axis of x Thus when the electric field is parallel to 'one of the axes of the ellipsoid, the density of the electrification is, as in the case of a sphere, proportional to the cosine of the angle which the normal to the surface makes with the direction of the electric intensity in the undisturbed field. By Coulomb's law the normal electric intensity at the surface of the ellipsoid is equal to...
Page 158 - Presnel's laws of vitreous reflection requires, as has be seen, the determination of but one constant, the index of refraction, or the ratio of the velocities of propagation of light in the two media. Cauchy extended these laws so as to cover the case of metallic reflection by introducing another constant which he calls the co-efficient of extinction. The constant corresponding to the index of refraction is, as in the case of transparent bodies, the tangent of the angle of maximum polarization.
Page 403 - ... but not quite perpendicular to its principal plane. The parts into which the prism is thus divided are joined in reversed positions and a diaphragm with a circular opening is placed at each end. The light which passes through both diaphragms produces a circular field, divided by a diametrical slit into two parts, in which the planes of polarization are slightly inclined to each other. If then light, which has been previously polarized, be transmitted, it will be extinguished in the two parts...
Page xxi - ... depend directly upon the direction of the vibrations. The vibrations cannot undergo any change of direction on one side rather than on the other by incidence on a surface to which they are parallel, and will consequently remain parallel to themselves even when the incidence has taken place. And since the reflected and refracted rays both lie in the plane of incidence, the vibrations (which are perpendicular to that plane, and consequently to every line in it) will fulfil the optical condition...