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Constructive and Destructive Interference


	Two waves are said to interfere with each other when they pass though the same medium at the same time; sometimes the waves reinforce each other and sometimes they cancel, depending on their relative phases. The figure shows waves emerging from two slits that hit a screen and yield bright and dark strips corresponding to constructive and destructive interference.


	Contributed by: Enrique Zeleny

Interference (ScienceWorld)

Double Slit Interference (ScienceWorld)

Phase Angle (ScienceWorld)

"Constructive and Destructive Interference" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/ConstructiveAndDestructiveInterference/

Contributed by: Enrique Zeleny

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