(periodic wave)        (15.1)

v, λ, f

          (15.3)

        (sinusoidal wave moving in +x-direction)

x, t, A, ω

                             (15.4)

(sinusoidal wave moving in +x-direction)

 

                     (15.7)

(sinusoidal wave moving in +x-direction)

 

 (wave equation)           (15.12)

 

 (speed of a transverse wave on a string)      (15.13)

μ: the mass per unit length

 (average power, sinusoidal wave on a string)        (15.25)

 

 (inverse-square law for intensity)                 (15.26)

 

 (principle of superposition)          (15.27)

 

                                         (15.28)

(standing wave on a string, fixed end at x = 0)

 

  (string fixed at both ends) (15.33)

 

 

 (string fixed at both ends)         (15.35)