§122。ne- dimensional waves and the equation of waves (c Traveling wave y(x,) A=vT =νT 4. Sinusoidal (harmonic)waves Y(x, t)=Acos k(r-v) Y(x, t) 812.2 one-dimensional waves and the equation of waves 4. The physical meaning of the harmonic waves Model: One-dimensional harmonic waves If the oscillatory equation at point o is Yo=Acos(@t +o)--harmonic motion y=平(x,t)=?7 x Ψ(x,t) v r o λ = vT v∆t (c) Traveling wave ν = λ = vT v =νλ T 1 4. Sinusoidal (harmonic) waves Ψ(x,t) = Acos[k(x − vt)] x Ψ(x,t) v r o λ §12.2 one-dimensional waves and the equation of waves 4. The physical meaning of the harmonic waves Model: One-dimensional harmonic waves x v r o If the oscillatory equation at point o is cos( ) Ψ0 = A ωt + φ Ψ = Ψ( x,t) = ? --harmonic motion §12.2 one-dimensional waves and the equation of waves