wave front


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Related to wave front: wavelet, Huygens principle

wave front

Of a sound wave, a continuous, imaginary surface which is the locus of points having the same phase at a given instant.
References in periodicals archive ?
In general, it can be expected that the wave front will propagate in line with following expression:
STEP5:MSE (Mean Square Error) is obtained by Comparing the acquired wave front with reference wavefront.
The wave front measurement channel reliably measures the shape of the pulse in the time range from nanoseconds to 10 [micro]s, and the fall measurement channel--in the time range from 10 [micro]s to several tens of milliseconds.
005, it has been observed that the leading part of the initial Gaussian condition steepens as a consequence of the nonlinear convective terms and results in large gradients of u at the wave front.
The dependence of non-dimensional front velocity on the value of discontinuity across the wave front is shown in Fig.
The local dependency has been assumed to be a result of the superposition of the flow causing the wave front and short-range fluctuations.
The most commonly used apparatus is based on the principles of Hartmann-Shack aberrometry, which measures distortions in a wave front of light emitted from the eye after it has passed through the eye's optics.
While the majority of concussions suffered by our servicemen are the result of explosive wave fronts or high-velocity, low-mass fragments and/or projectiles, those suffered on the grid-iron are due to low-velocity, high-mass encounters with opposing players.
With an increase of apex angle (ship's half entrance angle), the wave front angle increases, and the steepness of the wave slope obviously exceeds the limit of the linear wave system, as seen in Fig.
Relative time of flight for most of significant pressure signals was estimated as the phase difference between an ideal plane wave front at the optimum incidence angle and the calculated pressure wave front (6)
If we need only to define the behavior of a field near the wave front, then we can use one of the geometric optics methods - the "progressing wave" method, and a weakly dispersive approximation in the form of appropriate local asymptotics, and find the representation for the phase functions argument o inthe form: o = a (t, x, y)(S(t, x, y) - st )s - a , where the function S(t, x, y) defines the wave front position and is determined from the eikonal equation solution: A2S = c-2(x, y, t ) , where c(t, x, y) is the maximum group velocity of a respective wave mode, i.
In the present alternative treatment, it has been proved that in any point of these metamaterials (in absence of charges and currents) the wave front (or the ray) is getting distorted in such a way that [bar.