Results 211 to 220 of about 48,509 (267)

Waves in Sunspots: Resonant Transmission and the Adiabatic Coefficient

Solar Physics, 2001
We investigate linear acoustic-gravity waves in three different semi-empirical model atmospheres of large sunspot umbrae. The sunspot filter theory is applied, that is, the resonant transmission of vertically propagating waves is modelled. The results are compared with observed linear sunspot oscillations.
A. Settele, J. Staude, Y.D. Zhugzhda
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Reflection and Transmission Coefficients for Stress Waves in Bars

The Journal of the Acoustical Society of America, 1963
Previous experimental work has raised a question about the validity of one-dimensional wave theory for predicting the reflection of compression pulses in elastic bars. The measurements reported here are in much better agreement with these predictions than those previously reported.
R. Plunkett, R. B. Doolen
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Reflection and transmission coefficients for plane waves in elastic media

Geophysics, 1940
Abstract The results are given of a systematic series of calculations on the coefficients of reflection and transmission for plane waves incident on elastic interfaces. Tables are given for the amplitudes of the reflected and transmitted longitudinal and transverse waves, for the intensities of these components, and for the fractions ...
M. Muskat, M. W. Meres
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Slow waves, boundary conditions, and reflection and transmission coefficients

The Journal of the Acoustical Society of America, 1990
Biot's theory of acoustics in fluid-saturated porous media predicts a “fast” compressional wave, a unique “slow” compressional wave, and a shear wave. Experimental work by the authors demonstrated that Biot theory correctly predicts the measured speeds of all three waves.
Thomas J. Plona, David Linton Johnson, Ralph D'Angelo   +2 more
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Wave Transmission Coefficient for Rubble Mound Structures with Superstructures

Journal of Coastal Research, 2018
ABSTRACT Kim, Y.-T., and Lee, J.-I., 2018. Wave Transmission Coefficient for Rubble Mound Structures with Superstructures. In: Shim, J.-S.; Chun, I., and Lim, H.-S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 21–25.
Young-Taek Kim, Jong-In Lee
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Universal Properties of the Plane-Wave Reflection and Transmission Coefficients

1990
The reflection and transmission coefficients of plane monochromatic waves have several universal properties which do not depend on the type of medium stratification. We begin this chapter with a discussion of the symmetry properties of the transmission coefficient which are retained upon reversion of the direction of wave propagation [6.1].
Leonid M. Brekhovskikh, Oleg A. Godin
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The transmission coefficient of elliptical and rectangular apertures for electromagnetic waves

IEEE Transactions on Antennas and Propagation, 1968
A simple scalar method using Kirchhoff's boundary values is applied to the diffraction problems of circular, elliptical, and rectangular apertures for normally incident electromagnetic waves. As far as circular apertures are concerned, a simple formula can be derived not only for the diffraction pattern but also for the transmission coefficient.
G. Koch, K. Kolbig
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Transparent and double-sided wave absorber with specified reflection and transmission coefficients

2009 International Symposium on Electromagnetic Compatibility - EMC Europe, 2009
A double-sided wave absorber with specified reflection and transmission coefficients at both sides is proposed. This wave absorber consists of two transparent dielectric layers with three transparent resistance films. Therefore, this wave absorber is transparent and electromagnetic waves are absorbed in both sides.
Toshikazu Sekine, Yasuhiro Takahashi, Takashi Nakamura   +2 more
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Uniform decay rate for the transmission wave equations with variable coefficients

Journal of Systems Science and Complexity, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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The wave transmission coefficients and coupling loss factors of point connected structures

The Journal of the Acoustical Society of America, 2003
This analysis is concerned with the calculation of the elastic wave transmission coefficients and coupling loss factors between an arbitrary number of structural components that are coupled at a point. A general approach to the problem is presented and it is demonstrated that the resulting coupling loss factors satisfy reciprocity.
R S, Langley, P J, Shorter
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