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Interference and diffraction

Publisher Summary

This chapter focuses on interference and diffraction in waves. At the point where two waves cross, the total displacement is the vector sum of the individual displacements because of each wave at that point. This is the principle of superposition. If the two waves are either both transverse or both longitudinal, interference effects may be observed. Interference takes place between the two waves and a standing or stationary wave is produced. Standing waves may be set up in a string, for example, when a wave is reflected at the end of the string and is super imposed on the incoming wave. Under these circumstances, standing waves are produced only for certain frequencies. Moreover, the nodes ...

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