Results 291 to 300 of about 11,701,451 (333)

Uniform Field Breakdown in Air

Nature, 1955
RECENT work by Llewellyn Jones and Parker1 on the steady-state current flow in a uniform field gap in air subjected to a steady d.c. potential has been interpreted in terms of the Townsend theory of breakdown involving a secondary or γ-process. Oscillographic observation, however, shows that, as the breakdown voltage is approached, relatively high ...
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Modeling molecular response in uniform and non-uniform electric fields

The Journal of Chemical Physics, 2013
The response of a molecule to an electric field E, often a model of environment, can be expressed in terms of a sum of power series expansions. We investigate the accuracy and limits of applicability of this expression using one-, two-, and three-dimensional models of the hydrogen-bonded complex, ClH:NH3.
Michael, Morris, Meredith J T, Jordan
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Ponderomotive ratchet in a uniform magnetic field

Physical Review E, 2005
We show how a ratchet effect, generally used in systems with periodic potentials, can also be practiced on charged particles by an ac field alone, in a background magnetic field near the cyclotron resonance. The effect relies entirely on the spatial inhomogeneity of the high-frequency drive, which produces a deterministic asymmetric ponderomotive ...
I Y, Dodin, N J, Fisch
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Hanging Around in Non-Uniform Fields

The American Mathematical Monthly, 2015
AbstractWe define a family of curves, the n-catenaries, parameterized by the nonzero reals. They include the classical catenaries (n = 1), parabolas (n = 1/2), cycloids (n = −1/2), and semicircles ...
Fred Kuczmarski, James Kuczmarski
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Gyrotropic thermoelement in uniform and non-uniform magnetic fields

Journal of Thermoelectricity, 2020
Using computer simulation, the temperature distributions in the working medium of gyrotropic thermoelements in uniform and non-uniform magnetic fields have been determined. Temperature dependences of the efficiency of gyrotropic thermoelements in uniform and non-uniform magnetic fields are determined.
N.A. Godovanets, I.A. Konstantynovych, A.V. Konstantynovych, S.D. Shugani   +3 more
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Line Sink in Uniform Magnetic Field

The Physics of Fluids, 1971
The motion of an inviscid, incompressible, and conducting fluid due to a line sink in a uniform strong magnetic field is considered. The solutions show that motion is confined in a narrow region parallel to the magnetic field. Such a motion for a point sink has erroneously been named as a wake or backward jet flow.
Narain, Jai Prakash, Uberoi, Mahinder S.
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The action in a uniform field

Mathematical Proceedings of the Cambridge Philosophical Society, 1941
We consider the motion of a particle in a plane field of force. We take rectangular cartesian coordinates (x, y) in the plane, and denote by V(x, y) the potential of the field, and by h the (constant) energy of the motion. If A and B, whose coordinates are (x0, y0) and (x1, y1), are any two points on an orbit, the orbit is characterized by the property
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Field of a particle in uniform motion and uniform acceleration

Annals of Physics, 1962
Abstract The line element in the neighborhood of a charged particle, according to general relativity theory, is put into the isotropic form. By means of a Lorentz transformation the gravitational and electromagnetic fields of a particle in uniform motion are obtained.
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Uniform field flicker: Masking and facilitation

Vision Research, 1989
The influence of uniform field flicker (UFF) on the contrast threshold for stationary sinusoidal gratings was measured as a function of flicker depth. Changing from no flicker to a flicker depth of 10% produces reliable differences in threshold. Further increases in flicker depth to 60% had little additional influence.
D R, Badcock, D, Smith
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Static uniform magnetic fields and amoebae

Bioelectromagnetics, 1997
Three species of potentially pathogenic amoebae were exposed to 71 and 106.5 mT from constant homogeneous magnetic fields and examined for inhibition of population growth. The number of amoebae for three species was significantly less than controls after a 72 h exposure to the magnetic fields when the temperature was 20 C or above. Axenic cultures, i.e.
S G, Berk, S, Srikanth, S M, Mahajan, C A, Ventrice   +3 more
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