Chapter 15: Wave motion.

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Presentation transcript:

Chapter 15: Wave motion

Wave equation Dispersion relation

The principle of superposition General case Making a square wave At t=0 we have End of rope is fixed

Reflection and Transmission Wave pulse reaches a discontinuity Wave pulse is partly reflected and transmitted End of rope is fixed End of rope is free

Two waves pulses pass each other destructive constructive

Interference of Waves Light plus light gives darkness when Φ=180 Constructive Destructive Light plus light gives darkness when Φ=180

partially destructively Two waves interfere destructively partially destructively constructively

Standing Waves The frequency at which standing waves are produced are the natural frequencies or resonant frequencies

Resonant waves in a cavity

Law of reflection

Refraction

Deriving the wave equation

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