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Chapter 16. Superposition and Standing Waves. Section 16-1: Superposition of Waves. When two or more waves combine, the resultant wave at any point, is the algebraic sum of the individual waves. Superposition and the Wave Equation y 3 = c 1 y 1 + c 2 y 2 superposition.
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Chapter 16 • Superposition • and • Standing Waves
Section 16-1: Superposition of Waves When two or more waves combine, the resultant wave at any point, is the algebraic sum of the individual waves.
Superposition and the Wave Equation y3 = c1y1 + c2y2 superposition
Phase difference due to a path difference Waves are in phase if the phase difference, δ= n(2π) This results in constructive interference
The waves are exactly out of phase when δ= (n+½)2π This results in destructive interference
Intensity versus path difference for two sources that are in phase.
Two sources that are in phase, or have a constant phase difference are said to be coherent. The Double Slit Experiment: doubleslit
Section 16-2: Standing Waves String fixed at both ends The standing wave condition is when L = n(½λ) and fn= nν/2L =nf1
Wave functions for standing waves String fixed at both ends wavesuperposition