Interference and Diffraction
In Chapter 2 we learned about several interesting properties of waves, including constructive and destructive interference. Fig. 2.8 illustrates the constructive and destructive interference that occurs when two wave pulses travel in opposite directions on a one-dimensional medium such as a rope. In the case of continuous waves, constructive and destructive interference lead to standing waves, as shown in Fig. 2.9. We now discuss what happens when waves travel in a two-dimensional medium (such as water waves on the surface of a pond) or a three-dimensional medium (such as light waves in a room).
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References and Suggested Reading
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