Results 261 to 270 of about 1,004,154 (305)
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On the Electric Strengths of Aliphatic Hydrocarbons
Journal of Applied Physics, 1954Paschen's similarity law, which expresses a certain relationship between the breakdown voltage of a gas, the gas pressure, and the distance between electrodes, is known to fail at high pressures. This is owing, at least in part, to a change in the way in which electrons dissipate energy to the gas molecules.
R. W. Crowe +2 more
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Electric Field Strength Due to Electric Excitation
2000We start with the modified Maxwell equations without electric and magnetic charges, having constant scalars for the permeability µ and the permittivity ϵ. The following equations apply to a medium at rest: $$curlH = \in \frac{{\partial E}}{{\partial t}} + {{g}_{e}}$$ (1) $$- curlE = \mu \frac{{\partial H}}{{\partial t}} + {{g}_{m ...
Henning F. Harmuth, Konstantin A. Lukin
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The Electric Strength of Air at High Pressure
Transactions of the American Institute of Electrical Engineers, 1939Results are given of an investigation of the electric strength of air at pressures up to 21 atmospheres. Sparking voltages are presented for air under pressure as measured with 60-cycle alternating voltage applied to sphere gaps. Deviation from the linear pressure-voltage relation that exists at low pressures is discussed, and certain characteristics ...
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Electric Strength of Irradiated Polythene
Nature, 1955THE electric strength of irradiated polythene has been measured for material cross-linked by exposure to 4-MeV. electrons from a linear accelerator. Thin (1-mm.) moulded disks of material (average molecular weight, 17,000) recessed to a thickness of about 50 microns were irradiated in vacuo with doses of 150–300 Mrad , and the electric strength ...
K. H. STARK, C. G. GARTON
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Electric quadrupole strength in nuclei
Nuclear Physics A, 1980Abstract Isoscalar electric quadrupole strength distributions in nuclei are surveyed, and it is concluded that the strength is shared, in most cases, roughly equally between low-lying transitions and the giant quadrupole state. The same is not true of the isovector case.
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Electric Strength and Liquid Structure
Journal of Applied Physics, 1957Recent work on the electric strength of pure hydrocarbon liquids has shown that the strength is probably determined by the amount of energy lost by conduction electrons exciting molecular vibrations by collisions while moving under the applied field through the liquid.
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The electric strength of solid dielectrics
British Journal of Applied Physics, 1966It is nearly fifteen years since Whitehead published his comprehensive and authoritative book Dielectric Breakdown in Solid Insulation. At that time it was believed that each solid homogeneous dielectric possessed an intrinsic electric strength which was a physical constant of the substance, adequately accounted for by existing theories.
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The Electric Strength of Dielectric Films
Proceedings of the Physical Society, 1948An attempt is made to verify the rise in electric strength predicted by Frohlich's theory as the thickness of the dielectric specimen approaches the electronic mean free path. The results obtained on a number of materials both crystalline and amorphous are given and discussed in relation to this theory.
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