Optics pp 185-204 | Cite as


In the chapter on interference, we always considered only one incident wave and assumed that it was emitted by a distant point source. Recalling Young’s experiment, the incident wave generated two new waves at the two openings at distance a of a double slit screen. The two new waves had a fixed phase relation and their superposition generated the interference pattern. The two waves were called coherent waves. In our model description we used two monochromatic waves with a fixed phase relation. The superposition generated the amplitude interference pattern, and the corresponding intensity pattern could be related to observations.


Source Point Interference Pattern Coherence Length Line Source Fringe Pattern 
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© Springer Science+Business Media, LLC 2007

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