搜索结果: 1-15 共查到“理学 refraction”相关记录17条 . 查询时间(0.101 秒)
The experimental set-valued index of refraction of dielectric and anelastic media
dielectric anelastic splitting index of refraction
2015/9/28
The dielectric parameter, in the generalised Debye form, of all studied substances (Cole and Cole, 1941) contains a rational power of the imaginary frequency which implies that the index of refraction...
The Beam-Forming Technique for Enhancement of Noisy Seismic Refraction Data
Seismic Refraction Beam-Forming Filter Random Noise
2013/3/11
We have described a method of obtaining useful information from noisy seismic refraction data. The simple method, tagged beam-forming technique, is based on the basic time-distance equations of refrac...
Reconciliation of generalized refraction with diffraction theory
Reconciliation of generalized refraction diffraction theory Optics
2012/4/20
When an electromagnetic wave is obliquely incident on the interface between two homogeneous media with different refractive indices, the requirement of phase continuity across the interface generally ...
Validity of the Refraction Microtremors (ReMi) Method for Determining Shear Wave Velocities for Different Soil Types in Egypt
Refraction Microtremors ReMi Crosshole Downhole Shear Wave Egypt
2013/3/7
The Refraction Microtremor (ReMi) method is being used around the world by the geotechnical and geophysical community to determine shear-wave velocities. This is due to its faster, less expensive and ...
Polarization-dependent transformation of a paraxial beam upon reflection and refraction: a real-space approach
Polarization-dependent transformation paraxial beam real-space approach reflection refraction
2011/8/3
Abstract: We analyze the paraxial beam transformation upon reflection and refraction at a plane boundary. In contrast to the usual approach dealing with the beam angular spectrum, we apply the continu...
Wave scattering by small bodies and creating materials with a desired refraction coefficient
wave scattering small scatterers wave focusing negative refraction
2011/1/21
In this paper the author’s invited plenary talk at the 7-th PACOM (PanAfrican Congress of Mathematicians), is presented.
Negative refraction in natural ferromagnetic metals
Negative refraction natural ferromagnetic metals
2010/11/23
It is generally believed that Veselago’s criterion for negative refraction cannot be fulfilled in natural materials. However, considering imaginary parts of the permittivity (") and permeability(μ) an...
Dynamics of soliton-like solutions for slowly varying, generalized gKdV equations: refraction vs. reflection
gKdV equations integrability theory soliton dynamics slowly varying medium
2010/12/13
In this work we continue our study of the description of the soliton-like solutions of the variable coecients, subcritical gKdV equation ut + (uxx u + a("x)um)x = 0; in Rt Rx; m = 2; 3 ...
Preliminary Results of a Seismic Refraction Study of the Earth's Crust in S. W. Finland
Preliminary Results Seismic Refraction Study
2009/6/18
Preliminary Results of a Seismic Refraction Study of the Earth's Crust in S.W.Finland.
Structure of the Earth's Crust in Fennoscandia as Revealed from Refraction and Wide-Angle Reflection Studies
crustal structure Fennoscandia refraction wide-angle reflection Moho-map
2009/6/10
The crustal structure in Fennoscandia has been intensively studied by seismic methods over the
last one and half decade. The features and differences of the crustal structure are discussed by reviewi...
A simple approach to refraction statics with the Generalized Reciprocal Method and the Refraction Convolution Section
Statics reflection refraction GRM RCS seismic
2009/3/5
We derive refraction statics for seismic data recorded in a hard rock terrain, in which there are large and rapid variations in the depth of weathering. The statics corrections range from less than 10...
Divergence of sun-rays by atmospheric refraction at large solar zenith angles
sun-rays atmospheric refraction large solar zenith angles
2009/3/4
For the determination of photolysis rates at large zenith angles it has been demonstrated that refraction by the earth's atmosphere must be taken into account. In fact, due to the modified optical pat...
An Illustrative Model Describing the Refraction of Long Water Waves by a Circular Island
Illustrative Model Circular Island Long Water Waves
2009/2/13
The refraction of small shallow water waves by an idealized circular island is studied in this paper. The island's shoal is modeled by a quartic polynomial in the radial variable. This particular mode...
Low-loss negative refraction by laser induced magneto-electric cross-coupling
Low-loss negative refraction laser magneto-electric cross-coupling
2010/4/7
We discuss the feasibility of negative refraction with reduced absorption in coherently driven atomic media. Coherent coupling of an electric and a magnetic dipole transition by laser fields induces m...
Long-Wave Generation Due to the Refraction of Short-Wave Groups over a Shear Current
Long-Wave Generation Shear Current Short-Wave Groups
2008/12/27
The generation of long waves by short-wave groups propagating over a shear current is studied. The incident wave groups consist of two co-linear short waves with slightly different frequencies. These ...