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Interference

Summary

Wave interference can be described using the superposition principle, which states that the total wave amplitude at any point in space and time is equal to the sum of the amplitudes of all of the waves that occur at that same point and time. In constructive interference the waves combine to make a larger amplitude wave, whereas in destructive interference the waves combine to make a smaller amplitude wave. You will investigate these wave behaviors using the Physics of Sound application, which allows you to adjust both the amplitude and phase of a set of waves.
Interference

Student lesson materials


Investigation


Electronic resources