What Does The Huygens' Principle States? Please Explain It For Me In Detail.
Answer:
When seismic waves strike any irregularity along a surface such as a corner or a point where there is a sudden cash of the curvature, the irregular feature act as a point source for radiating waves contained by all directions an accordance with the Huygens ' Principle. Such radiation is known as diffraction. Waves surrounded by a homogeneous medium spread out from a point source as expanding spheres. The Huygens ' Principle states that every point on a wave front is the source of a new flap that also travels out from it in spherical shells.
Let a buried corner from which waves excited by radiation downward from a source at the surface, spread in adjectives directions along the paths which are rectilinear as long as the velocity is constant. A diffracted wave will reach the surface first at a point directly above the top because the path is shortest to this point. The event will be observed at successively later times as one move along the surface away from the point. The amplitude of a diffracted wave falls past its sell-by date rapidly with the distance from the nearest point to the source. The diffracted events are frequently observed on the seismic record, but they are not other recognized as such.
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