Superposition of waves (2)
- Created by: Sevdeg
- Created on: 10-05-14 11:20
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- Superposition of waves (2)
- Interference: A phenomenon of superposition of waves propagating through space.
- Constructive interference: When two waves arrive at a point in phase they add up.
- When two waves are antiphase they cancel out resultant wave is zero. We expect silence (destructive interference)
- Path difference:Extra distance travelled by one of the waves compared with the other
- Constructive interference: Path difference nl
- Destructive interference: Path difference is (n+1/2) l
- Coherence:Coherent sources emit waves that have a constant phase dif.
- Two waves can only have a constant phase dif if their frequency is the same!
- Interference: A phenomenon of superposition of waves propagating through space.
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