Results 251 to 260 of about 2,253,922 (294)

The Propagation of Electromagnetic Waves in Parabolic Pipes

Physical Review, 1942
The properties of parabolic pipes for the transmission of electromagnetic waves are here analyzed. Formulae are given for the field configurations, critical frequencies, and attenuation constants. The results resemble those obtained by Chu for the elliptical pipe.
Spence, R. D., Wells, C. P.
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Propagation of Electromagnetic Waves

1993
In this chapter we deal with the fundamentals of wave propagation. The relationships derived are quite general. However, we are chiefly interested in III–V semiconductor materials. Of special significance are optical frequencies in the neighborhood of the bandgap, and hence for AlGaAs wavelengths from yellow-red to the near infra-red region of the ...
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Propagation of Electromagnetic Waves

1991
The propagation of electromagnetic waves in three dimensional dielectric wave guides is described by the Maxwell system of equations $$ \nabla \times \bar{E} = - {{\mu }_{0}}\left( z \right)\frac{{\partial \bar{H}}}{{\partial t}}, $$ (1.1) , $$\nabla \times \bar H = - { \in _0}\left( z \right)\frac{{\partial \bar E}}{{\partial t}},$$ (1 ...
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Propagation of electromagnetic waves in Earth

Geophysics, 1949
Abstract The successful use of radar for locating objects has led the authors to consider the possibility of using it to determine discontinuities within the earth. Knowledge of the propagation characteristics of waves in the earth is required before such a development might be undertaken. The present article reviews the literature in
O. C. Haycock, E. C. Madsen, S. R. Hurst
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Propagation of electromagnetic waves in a rectangular tunnel

Applied Mathematics and Computation, 2003
A study of radio communication in the underground metero tunnel of the city of Cairo, Egypt was carried out. A part of this tunnel was selected, which has a rectangular shape. Its dimensions are 8.85 m wide, 5.9 m height and 4.5 km long. The walls are made of concrete which have conductivity between 10^-^1 and 10^-^2mho/m.
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Propagation of Electromagnetic Waves

1995
Abstract The experimental methods presented in this monograph concern the interaction of light with complex materials for the purpose of elucidating aspects of structure and dynamics. The interactions range from simple transmission and reflection, to scattering and nonlinear responses.
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Electromagnetic wave propagation

2000
Abstract In Chapter 12 we treated the generation of electromagnetic waves, which was governed by inhomogeneous wave equations. The propagation of electromagnetic waves is characterized by homogeneous wave equations. This does not mean that we are going to set all charges and currents equal to zero, because that would limit us to ...
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Electromagnetic Wave Propagation Fundamentals

2008
Here we give a brief summary of the features of the theory that are needed to understand the formation, emission and propagation of electromagnetic waves, in the CGS system. The quantities are the electric field intensity \(\boldsymbol{E}\), the electric displacement \(\boldsymbol{D}\), the magnetic field intensity \(\boldsymbol{H}\), the magnetic ...
Thomas L. Wilson, Kristen Rohlfs, Susanne Hüttemeister   +2 more
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Electromagnetic Wave Propagation

2017
The study of electromagnetic wave propagation is based on the ideas of the great nineteenth-century theoretical physicist, James Clerk Maxwell. He was able to describe time-varying electromagnetic fields with four equations from which we derive the wave equation. Electromagnetic waves-which are the solutions of this equation-propagate with the velocity
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PROPAGATION OF ELECTROMAGNETIC WAVES OVER THE EARTH

Science, 1925
H W, Nichols, J C, Schelleng
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