1) Ripple in a pond 2) Surface 3) Wave front
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https://www.crosswordclues.com/clue/wavefront
Imaginary surface or line that joins points at which the waves from a source are in phase (e.g., all at a maximum or all at a minimum).
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http://earthquakescanada.nrcan.gc.ca/info-gen/glossa-eng.php
In physics, a wavefront is the locus of points having the same phase: a line or curve in 2d, or a surface for a wave propagating in 3d. Since infrared, optical, x-ray and gamma-ray frequencies are so high, the temporal component of electromagnetic waves is usually ignored at these wavelengths, and it is only the phase of the spatial oscillation th...
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http://en.wikipedia.org/wiki/Wavefront
surface on which, at a given time, for sinusoidal conditions, all characteristic quantities of a wave have the same phase
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=101-15-03
an equiphase surface common to all the components of the vectors of an electromagnetic field, when such a surface exists NOTE - A wavefront is orthogonal at each point to the real part of the wave vector relative to this point.
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=705-01-30
the locus of points where all components of the vectors of an electromagnetic wave have the same phase at the same time
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=731-03-02
<microscopy> A surface at which all vibratory motion is of like phase concurrently. ... (05 Aug 1998) ...
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http://www.encyclo.co.uk/local/20973
A set of points at which the phase of vibration of the physical quantity associated with a wave is the same.The surfaces joining all points of equal phase are known as wavefronts.
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https://www.encyclo.co.uk/local/20687
No exact match found.
