PHYSICS 1 Interference What happens when two waves are superposed?

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The waves spread out from the opening!
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Presentation transcript:

PHYSICS 1 Interference What happens when two waves are superposed? Somnath Bharadwaj and Pratik Khastgir, Department of Physics and Meteorology, IIT Kharagpur, 721 302 India http://www.cts.iitkgp.ernet.in/~phy1/

Youngs double slit experiment

Youngs double slit experiment At the point P

Youngs double slit experiment At the point P Phasors

Phasors Phasor Addition

Intensity

Intensity

Intensity Maximum Minimum

Youngs double slit experiment

Intensity pattern

Fringes Small angle

Fringes

A different analysis

The analysis

Maxima and Minima Minima Maxima

Particular case y x

Fringes

Check that they are same

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