October 2009
Intermediate to advanced
503 pages
14h 28m
English
Content preview from Engineering Physics
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Chapter 14
Optics
Interference
When a number of waves pass through a point in a medium at the same time, they combine to produce a resultant wave a having different amplitude and hence intensity than the individual waves at that point. This process is known as the interference. The resultant intensity at a point is due to the combined influence of all the waves that pass through the point. Interference produces modification in the distribution of intensity of light. Interference have been observed with light waves, sound waves, water waves, etc. Interference can be explained using the principle of superposition of waves.