Interference of Light

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Chapter 47 Interference of Light

The intensity of a wave is proportional to the square of the amplitude of the wave but when two waves overlap, the generate a new wave that is sum of the two waves whose amplitude could vare between the difference and sum of the two amplitudes. That makes intensity vary in space. At some places, there will be zero intensity and at other places a maximum intensity. This is called interference of waves and is a fundamental expectation from every wave, whether it be a light wave, sound wave or quantum wave. In this chapter we will study basic consequences of interference of light.

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