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2 Tutorials that teach Wave Interference
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Wave Interference

Wave Interference

Author: Nathan Lampson
Description:

This lesson will discuss the differences in constructive and destructive wave interference.

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Tutorial

 

When waves interfere with one another there are two types of interference, constructive and destructive. 

 

Constructive Interference occurs when waves combine to create a wave with a larger amplitude.  When the crests of two waves come together they form a higher peak.  Troughs coming together form a deeper trough.  Higher peaks and deeper troughs are both examples of increasing the magnitude of a wave.

 

Destructive Interference is when waves coming together interfere with one another in a way where energies are subtracted.  When the crest of one wave overlaps with the trough of a different wave.  With destructive interference if the crest is a greater amplitude than the trough, the part of the crest bigger than the trough will remain.  If the amplitude of the crest of a wave is equal to the trough of a wave, they will cancel each other out.