Results 231 to 240 of about 15,517,805 (287)

Neuronal Microtubules and Radiofrequency Waves: The Quantum Core of Human Consciousness, Memory, and Pathway to Memory Enhancement/Recovery. [PDF]

Int J Mol Sci
Arendash GW.
europepmc   +1 more source

A general theory of electromagnetic constitutive relations

Philosophical Magazine B, 1997
Abstract Both necessary and sufficient conditions are derived in a systematic, rigorous way for an electromagnetic constitutive relation to satisfy two fundamental principles: the principle of frame indifference and the second law of thermodynamics. This yields a general theory of constitutive relations which generalizes the classical Ohm's and Hooke's
Wang, L
openaire   +4 more sources

Some of the next articles are maybe not open access.

Related searches:

The Hamiltonian of the General Theory of Relativity with Electromagnetic Field

Physical Review, 1950
In this paper we have given a specific example of a Hamiltonian of a non-linear field theory, a Hamiltonian density completely free of time derivatives. In accordance with the general theory developed previously, this Hamiltonian is one of the constraints between the canonical variables and, therefore, vanishes everywhere.
Bergmann, Peter G., Penfield, Robert, Schiller, Ralph, Zatzkis, Henry   +3 more
openaire   +2 more sources

A general theory of DC electromagnetic launchers

Journal of Applied Physics, 2015
The non-linear, transient operation of DC electromagnetic launchers (EMLs) complicates their theoretical understanding and prevents scaling studies and performance comparisons without the aid of detailed numerical models. This paper presents a general theory for DC electromagnetic launchers that has simplified these tasks by identifying critical EML ...
Thomas G. Engel, Erik J. Timpson
openaire   +1 more source

General Theory of Electromagnetic Horns

Journal of Applied Physics, 1951
Exact equations for the propagation of electromagnetic waves in a perfectly conducting horn of arbitrary shape are given. They take the form of an infinite set of simultaneous ordinary linear differential equations, and can be interpreted as the equations of propagation of a system of coupled E- and H-waves.
openaire   +1 more source

Electromagnetic Sources in General Relativity Theory

Physical Review, 1961
The simplest, most direct method of unifying Maxwell's theory of electromagnetism and Einstein's theory of gravitation was formulated by Rainich in 1925. That theory applies only to charge-free space. However, in regions of space in which the electromagnetic field invariant corresponding to E\ifmmode\cdot\else\textperiodcentered\fi{}B vanishes, the two
openaire   +1 more source

On the theory of electromagnetic generation of ultrasound in metals

Solid State Communications, 1980
Abstract The expressions obtained in [1–4] for the electron force acting in metals have been discussed and compared. It has been shown that for free electrons these expressions coincide and the discrepancy is due to the incomplete register of the bound structure effects in [2, 3].
E.A. Kaner, V.L. Falko
openaire   +1 more source

Uniform Electromagnetic Field in the Theory of General Relativity

Physical Review, 1959
A cosmological solution of the Einstein-Maxwell's field equations, corresponding to the case of a uniform (that is, covariant constant) electromagnetic field, is derived by means of simple geometrical arguments; the Riemannian manifold it corresponds to is the product of two ordinary surfaces of constant curvature, whose type and radius depend on the ...
openaire   +1 more source

Electromagnetic‐Like Generation of Unified‐Gauge Theories

Physics Essays, 1999
We carry out a critical analysis of the Maxwell electromagnetic theory, with emphasis on ifs "geometrical" features and gauge-theoretical properties. This allows us to single out five fundamental principles, which are at the very foundation of electromagnetism and can be used to build up any (electromagnetic-like) unified-gauge theory Such principles ...
R. Mignani, E. Pessa, G. Resconi
openaire   +3 more sources

Transition operators in electromagnetic-wave diffraction theory: General theory

Physical Review A, 1992
A formal theory is developed for the scattering of time-harmonic electromagnetic waves from impenetrable immobile obstacles with given linear, homogeneous, and generally nonlocal boundary conditions of Leontovich (impedance) type for the wave of the obstacle's surface.
openaire   +2 more sources