Results 211 to 220 of about 183,432 (264)

Evidence of Localized Wave Transmission

Physical Review Letters, 1989
The feasibility of launching an acoustic directed energy pulse train was tested experimentally. Excellent agreement between theoretical and experimental results was obtained.
, Ziolkowski, , Lewis, , Cook
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The Transmission Problem of Viscoelastic Waves

Acta Applicandae Mathematica, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Muñoz Rivera, Jaime E., Portillo Oquendo, Higidio   +1 more
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WAVE TRANSMISSION IN DISPERSIVE MEDIA

Mathematical Models and Methods in Applied Sciences, 2007
The aim of this paper is to study the reflection-transmission of geometrical optic rays described by semi-linear symmetric hyperbolic systems such as the Maxwell–Lorentz equations with the anharmonic model of polarisation. The framework is both that of Donnat and Williams since we consider dispersive media and profiles with hyperbolic (imaginary ...
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Acoustic-wave transmission in semiconductor superlattices

Physical Review B, 1988
Acoustic-phonon transmission and reflection amplitudes are evaluated for semiconductor superlattices. The calculation is based on a finite application of the transfer-matrix method, which permits one to take into account both the crystal anisotropy and the coupling between excited modes of different polarizations.
A Catellani, L Sorba
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Chaotic transmission of waves and “cooling” of signals

Chaos: An Interdisciplinary Journal of Nonlinear Science, 1997
Ray dynamics in waveguide media exhibits chaotic motion. For a finite length of propagation, the large distance asymptotics is not uniform and represents a complicated combination of bunches of rays with different intermediate asymptotics. The origin of the phenomena that we call “chaotic transmission,’’ lies in the nonuniformity of the phase space ...
Zaslavsky, G. M., Abdullaev, S. S.
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Seismic Wave Transmission

1956
When an earthquake occurs, energy, which may reach the order of 1025 ergs in the greatest earthquakes is released, within a few seconds or less, from a focal region inside the Earth whose linear dimensions may be of the order of several kilometres. The (somewhat indefinite) centre of the focal region is called the focus.
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Transmission theory of spherical waves

Electrical Engineering, 1938
This paper formulates the essential properties of spherical waves in terms of familiar engineering concepts. The physical picture resulting from this point of view facilitates the solution of certain physical problems, notably those having to do with reflection, refraction, shielding and power absorption.
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Beam Transmission of Ultra Short Waves

Proceedings of the IRE, 1928
Part I of this paper is devoted to a description of various experiments performed at wavelengths below 200 cm. Curves are given to show the effect of the earth and various types of inductively excited antennas called "wave directors." Part I is concluded with a discussion of beam and horizontally polarized radiation.
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The transmission of seismic waves

Eos, Transactions American Geophysical Union, 1933
In studying the instrumental results of the Santiago, Cuba, earthquake of February 3, 1932, the author was particularly impressed by the almost linear character of portions of the travel‐time curve for the P‐wave, and for other wave‐groups in the interval between P and S.
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Wave Chaos and Chaotic Transmission of Waves

1997
Abstract : Our goal is to develop an analytical and numerical approach to diagnose arrival sound waves from long-distanced sources on the basis of the most advanced methods of dynamics that include ray dynamics, wave dynamics reconstruction on the basis of ray dynamics, specific asymptotic solutions in the short-wave approximation, and specific ...
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