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Physics
Classical Physics
Optics
Constructive and destructive interference
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[QUOTE="Charles Link, post: 6173882, member: 583509"] The simplest case to look at is two point sources that radiate sinusoidal disturbances=waves, radially outward each with spherical symmetry. These sources are often studied for the pattern they make in a given plane. This is basically what the two slit interference pattern is all about. The intensity of the signal is proportional to the square of the sinusoidal amplitude. Let me try to find a "link" for you. This is perhaps the simplest case that has regions of constructive and destructive interference. The mathematics for the interference pattern is most easily described in the far-field, i.e. far away from the two point sources. See [URL]http://web.mit.edu/8.02t/www/802TEAL3D/visualizations/coursenotes/modules/guide14.pdf[/URL] Normally, for the sinusoidal disturbance, they use the function ##E(t)=E_o \cos(\omega t+\phi) ##. You can also work with ## \sin(\omega t) ##instead of ## \cos(\omega t) ##, but the customary convention is to use ## \cos(\omega t) ##. [/QUOTE]
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Forums
Physics
Classical Physics
Optics
Constructive and destructive interference
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