Showing papers in "Physica D: Nonlinear Phenomena in 1958"

TL;DR: In this article, a description of the apparatus used to measure the attraction between flat metal plates is given, and an explanation of results of earlier measurements made by the author on attraction between clean, and also between silvered glass and quartz plates, all brought in an ionized atmosphere is suggested.

TL;DR: In this paper, it was shown that for a system with zero pressure, the Fermi energy EF is equal to the average energy per particle E 0/N of the system.

TL;DR: In this paper, the experimental second virial coefficients are compared with the theoretical values of the Leonard Jones 6-12 potential, and the position of the coexistence boundary line and of the critical point is derived.

TL;DR: In this paper, the internal field for Bravais lattices of equal parallel dipoles having monoclinic and higher symmetry was evaluated and the electric field at a lattice point due to all the other dipoles in the lattice is given by a conditionally convergent sum.

TL;DR: In this paper, a general statistical mechanical formalism is presented which yields a closed expression for the dielectric constant of a system, of polarizable dipoles in terms of averages over molecular quantities.

TL;DR: In this article, the values of energy, entropy, free energy, enthalpy, free entropy, internal kinetic energy, specific heats, speed of sound and Joule-Thomson coefficient have been calculated at integral values of density and of pressure.

TL;DR: In this article, it was shown that water vapor is the active component for the change of the properties of CaF 2 after a thermal treatment at higher temperatures, and that the reaction consists in the diffusion of anion vacancies or oxygen ions.

TL;DR: In this paper, general expressions for the electrostatic potential in perfect multipole lattices are given as expansions in terms of spherical harmonics, and coefficients occurring in these expansions contain lattice sums of a general type, which have been treated previously.

TL;DR: In this paper, the authors compared the stationary phase method of Fresnel zones with the method of steepest descent and showed that the former is a primitive version of the latter, while the latter is a more complete version of it.

TL;DR: In this article, the authors reported measurements of the coefficient of viscosity of He, Ne, H2 and D2 between 20 and 80°K, using an oscillating disc viscometer.

TL;DR: In this article, the authors give a mathematical expression for and discuss some of the qualitative properties of the joint distribution function of the positions and momenta of pair of molecules in a non-equilibrium, but spatially uniform situation occurring in a fairly dilute, imperfect gas.

TL;DR: In this article, a study of the coloration of fluorite crystals after irradiation and additive coloration has been made, where Bleaching experiments and lattice parameter measurement lead to probable models for the α and β centers.

TL;DR: In this article, the authors showed that the imaginary part of the time-dependent pair distribution directly describes the local density change produced in a liquid or gas by the presence of a neutron.

TL;DR: In this paper, it was shown that diffusion theories for the generation of noise in semiconductors or tubes, published previously, will not explain 1/f noise and that the formalism is very useful for other diffusion phenomena such as surface generation and recombination of carriers.

TL;DR: In this paper, it was shown that disaccomodation is a time-dependent blocking of domain walls, the cause of which is supposed to be a transition of electrons between different ions.

TL;DR: In this paper, it was shown that the spectrum of generation-recombination noise in semi-conductors may differ from the usual form at relatively high field strengths or relatively short drift times of the carriers.

TL;DR: In this paper, the magnetic susceptibility of a MnCl2.4H2O single crystal has been measured parallel to its preferred (c-axis) and perpendicular direction of magnetization in the temperature regions of liquid hydrogen and liquid helium.

TL;DR: In this paper, the radioactive decay of 36 h 57 Ni has been investigated in more detail and only three γ-rays have been found; the 127 keV γ -ray transition is weaker than reported before and occurs only in (14 ± 1)% of the 57 Ni disintegrations.

TL;DR: In this article, the Gamma transitions in the decay of the nuclides 75Se and 75Ge have been investigated by scintillation spectroscopy, where single spectra and coincidence spectra were found to conform with the level schemes constructed by previous authors.

TL;DR: In this paper, the influence of the introduction of forces is represented by a correlation factor g k (r k ) = n k ∑ l = k ∞ b k, l ( r k ),, where the bk,l(rk)'s are cluster integrals which depend on the density, n, only, and not on the total number of particles.

TL;DR: In this paper, a method for measuring the asymmetry of positon emission by studying its annihilation radiation is described and discussed, and it follows that the nuclear spin of 52 Mn is zero within the experimental error.

TL;DR: In this paper, the proton-proton distance in a crystalline water was calculated from the frequency distance between these two resonance lines, which is in good agreement with the results of the measurements of Levy and Peterson using neutron diffraction.

TL;DR: In this article, it was shown that the form of positive column wave which appears as a moving striation can be generated by a growing relaxation oscillation of the equivalent of an anode spot.

TL;DR: In this article, the authors show that the expansion-sampling-theorem is nicht streng and all-gemeingultig, and that it can be decoupled from other informationstheoretischen Grundtheoreme.

TL;DR: A new temperature scale for the liquid 4He region was presented jointly by J. R. Clement and J. K. Logan at the Kamerlingh Onnes conference on low temperature physics at Leiden in June, 1958.

TL;DR: In this article, a kinetic derivation of the spectral noise intensity in first order approximation and for relatively high frequencies only, for a non-linear RC-circuit consisting of an idealized diode-valve in thermal equilibrium and a condenser, is given.