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Physics, 21.11.2019 06:31 amuijakobp78deg
Since sinusoidal waves are cyclical, a particular phase difference between two waves is identical to that phase difference plus a cycle. for example, if two waves have a phase difference of \frac{\pi}{4}, the interference effects would be the same as if the two waves had a phase difference of \frac{\pi}{4} + 2\pi. the complete criterion for constructive interference between two waves is therefore written as follows:
{\rm phase\ difference} = 0 + 2 \pi n \qquad {\rm for\ any\ integer}\ n
write the full criterion for destructive interference between two waves.
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