The Institute of Physics ( IOP ) по журналам "Journal of Physics A: General Physics"
Отображаемые элементы 1-20 из 436
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(1972-01-01)It is shown that if the space-time of a system composed of a perfect fluid coupled to a frozen-in magnetic field has two Killing vector fields, one of them collinear to four- velocity and the other proportional to the ...
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(1971-01-01)The transverse 'Fresnel ether drag' experienced when light passes through a refracting medium moving at right angles to the original direction of the light, and confirmed indirectly by Airy's water- filled telescope ...
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(1970-11-01)Absorption intensities are given in terms of the vapour phase solute transition dipole moment, and the dielectric properties of the solvent. The Chako factor is derived from perturbation theory and shown to be due to ...
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(1970-11-01)Expressions for the dielectric constant of a pure liquid are obtained from quantum electrodynamics, and compared with those obtained from electrostatic arguments. The Lorentz cavity field is shown to be associated with ...
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(1969-05-01)The absorption and refractive index increments due to continuous distributions of resonances have been calculated for both Debye-type distributions and for distributions Gaussian in logarithmic frequency. Comparison of the ...
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(1968-05-01)The non-mesonic and non-radiative capture processes of K mesons in light nuclei, K+2N -> +N and K+2N -> +N, have been investigated using a pair-absorption model. It is shown that the ratio of the capture rate by the ...
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(1971-07-01)On the basis of a calculation for the force and couple exerted on a moving point dipole given previously, a consistent description of classical spin for particles possessing charge and dipole moment is discussed.
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(1968-03-01)The motion of relativistic electrons close to the xy plane when subjected to static magnetic and electric fields (0, 0, B0) and (0, E0(1-ay), E0az) is analysed, B0, E0 and a being positive constants. The focusing properties ...
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(1971-07-01)Action principles using the Eulerian description are proposed for the elastic solid and perfect fluid in general relativity. By taking into account the constraints on the independent variables appearing in the Lagrangian ...
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(1968-01-01)The paper demonstrates the existence of a solution of the Einstein-Maxwell equations in general relativity where matter coexists with a cylindrically symmetric axial field.
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(1968-01-01)The density field formalism of Sherrington is used to obtain diagrammatic expansions and thus complete expressions for the quantities evaluation of the density correlation function. It is shown how these diagrammatic ...
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(1971-11-01)Measurements of the probability P(0) of detecting zero optical photons during a fixed counting time are used to verify an exact calculation of this quantity for the case of gaussian light with a Lorentz spectral line. The ...
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(1971-07-01)Direct use of a generalized Laplace transform is proposed for applications in nonequilibrium quantum statistics. The method includes the equilibrium 'double-time' Green's function method as a special case. An example is ...
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(1971-05-01)General results are developed for the Green function appropriate to radiation or diffraction in anisotropic media. The formulae may be evaluated from a knowledge of the geometry of the wavevector surfaces. The results allow ...
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(1968-05-01)An optical linewidth of 20 Hz of laser light scattered by spherical particles undergoing Brownian motion has been measured experimentally by photon-counting statistics using the theory of the intensity-fluctuation distribution ...
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(1972-01-01)Measurements of the width of a Lorentz spectral line using a digital photoelectron correlation device are compared with measurements made on the same gaussian light source by a pulse separation detector. The agreement of ...
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(1970-07-01)The steady-state structure of an ionizing current layer ('sheet') propaging into a cold unionized gas is examined using a collision-free self-consistent field approach. The results parallel those for a collision-dominated ...
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(1971-05-01)The problem of alpha decay of deformed even nuclei is treated by assuming the barrier to be the usual anisotropic electrostatic potential superimposed by a nonlocal alpha -nuclear potential. With certain assumptions a ...
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(1971-07-01)For pt. II see abstr. A35654 of 1971. A theory is developed to account for the intensity of ASE as a function of the length and diameter of the amplifying medium and of its inversion density. Detailed results are presented ...
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(1971-05-01)A simple relationship is derived between Lc the critical length for amplified spontaneous emission, and LT, the threshold length of gas that must be excited for laser action to occur in a cavity of loss delta l. The ...
Отображаемые элементы 1-20 из 436