🔑 Superposition: Dtotal(r,t) = Σ Di(r,t)
e.g. if 2 waves, we have wave interferenceD1(x,t) = A1 cos(k1x - ω1 t)
D2(x,t) = A2 cos(k2x - ω2 t)
Below we assume A2=A1
| ← | L25 波 Superposition | → |
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🔑 Superposition: Dtotal(r,t) = Σ Di(r,t)e.g. if 2 waves, we have wave interferenceD1(x,t) = A1 cos(k1x - ω1 t) D2(x,t) = A2 cos(k2x - ω2 t) Below we assume A2=A1 |
| k2 = k1,
ω2 = - ω1 → Standing Waves | k2 = k1,
ω2 = + ω1 → Interference | k2 ~ k1,
ω2 ~ + ω1 → Beats |
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