نتایج جستجو برای: way time of electromagnetic wave

تعداد نتایج: 21318959  

2014
Quan WANG Liquan LI Jin JIANG Ataul BARI Changjian DENG Dongyi CHEN

Deployment of wireless systems in nuclear power plants has attracted a lot of attention recently. However, before wireless systems can be installed in a nuclear power plant, it is necessary to evaluate the effect of radiation environment on electromagnetic wave which is the communication media for all radio wave based wireless systems. This is particular important if the wireless systems are ex...

Journal: :Journal of physics 2023

Abstract In this contribution, we propose a numerical solution to the Maxwell equations determine electromagnetic fields in toroidal dielectric wave-guide. Analyzing relationship between size of cross-section toroid and its bending radius. We considered sinusoidal time dependence field, then just solve Helmholtz equation waveguide. way analyze for find power radiation each synchronous mode. sho...

2015
L. D. Angulo J. Alvarez M. F. Pantoja S. G. Garcia A. R. Bretones

This text reviews the state of the art of the Discontinuous Galerkin (DG) method applied to the solution of the Maxwell’s equations in Time Domain (TD). The work is divided into two parts. In the first part, the mathematical formulation of the DGTD method, together with a review and a discussion on the different ways to implement it is presented. The second part presents models and techniques t...

2008
Iwo Bialynicki-Birula

This article contains a review of an alternative theory of squeezing, based entirely on the wave function description of the squeezed states. Quantum field theoretic approach is used to describe the squeezing of the electromagnetic field in its most complete form that takes into account temporal and spatial characteristics of the squeezed state. An analog of the Wigner function for the full ele...

Journal: :J. Comput. Physics 2010
Peijun Li

Consider a time-harmonic electromagnetic plane wave incident on an inhomogeneity embedded in a two-layered medium. In this paper, a method of coupling of finite element and boundary integral equation methods is presented for the solutions of electromagnetic scattering in both transverse electric and magnetic polarization cases. The well-posedness of the continuous and discrete problems, as well...

2009
Hamid Saleem

It is pointed out that electron thermal fluctuations can couple with the ion acoustic mode in an inhomogeneous plasma to generate a low frequency ion time scale electromagnetic wave. This electromagnetic wave can become unstable if the temperature and density gradients are parallel to each other which can be the case in laser-plasmas similar to stellar cores. The comparisons of the present theo...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2007
Pedro Pereyra Herbert P Simanjuntak

We study the space-time evolution of electromagnetic wave packets through optical superlattices. We present rigorous analytical solutions describing the multiple-scattering processes of Gaussian wave packets defined in the band gap and in the resonant energy regions. Following their space-time evolution, we obtain the Maxwell equations prediction for the time spent inside the superlattice. From...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ادبیات و علوم انسانی 1391

terms of address as an important linguistics items provide valuable information about the interlocutors, their relationship and their circumstances. this study was done to investigate the change route of persian address terms in the two recent centuries including three historical periods of qajar, pahlavi and after the islamic revolution. data were extracted from a corpus consisting 24 novels w...

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