Results 251 to 260 of about 11,898,229 (298)

Bloch electron in a uniform electric field

Physical Review B, 1992
A formula for calculating the interband matrix elements of X for a Bloch electron in a uniform electric field is derived, from which it is found that the interband matrix elements of X are only determined by the interband matrix elements of the derivative of the periodic potential. Using this formula with a Kronig-Penney potential leads to nonvanishing
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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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A method of evaluating magnetic field strength by correction between uniform and non-uniform field in near-field

2016 IEEE Global Electromagnetic Compatibility Conference (GEMCCON), 2016
This paper describes a new method for predicting the magnetic field strength in near-field for complex exposure situations. The measurement of the exposure level for compliance tests at sites close to a current source in the low frequency range is restricted by an abrupt gradient distribution in the field strength, non-uniform characteristics, and ...
Byung Chan Kim, Sang Bong Jeon, Jung-Ick Moon, Seong-Min Kim, Sang-Won Kim, In-Kui Cho   +5 more
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Field uniformity in radiated field immunity tests

2015 IEEE International Symposium on Electromagnetic Compatibility (EMC), 2015
The calibration requirements of radiated immunity tests performed in semi-anechoic chambers and fully anechoic rooms are analyzed by means of electromagnetic computational tools to verify the severity of the allowed tolerance requirements of their anechoic environments.
Audone, Bruno, Colombo, Roberto, BORSERO, MICHELE   +2 more
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A uniform electromagnetic-gravitational field

Physics Letters A, 1972
A solution of the coupled Einstein-Maxwell equations, describing an electromagnetic field with an associateduniform gravitational field, is discussed.
K.N. Srinivasa Rao, A.V. Gopala Rao
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Pair Production in a Uniform Electric Field

International Journal of Theoretical Physics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Optical Absorption in the Presence of a Uniform Field

Physical Review, 1963
Expressions for the absorption coefficient in the presence of a uniform field, of semiconductors and insulators for both allowed and forbidden transitions are derived. The results are expressed in terms of Airy functions, and the limiting cases examined indicate the tunneling mechanism as a possible explanation for the experimentally observed long ...
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XI.—Electromagnetic Phenomena in a Uniform Gravitational Field

Proceedings of the Royal Society of Edinburgh, 1932
In two recent papers Professor E. T. Whittaker has solved the electromagnetic equations for the case of a uniform gravitational field. The fundamental tensor associated with such a field makes the Riemannian tensor vanish, since such a field can be transformed away by a suitable choice of coordinates.
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Uniform distribution and Hardy fields

Journal d'Analyse Mathématique, 1994
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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An anisotropic nanosphere in a uniform field

2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Sub-systems for Radar, Telecommunications, and Biomedical Applications (BenMAS), 2014
Fields internal and external to an anisotropic nanosphere illuminated by a plane electromagnetic wave are expressed using a quasi-static approach. The field expressions obtained are particularly relevant for circuit modeling of nanoparticles. Closed form expressions for angles of refraction are given.
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