Khan Academy Static

In these videos and articles you'll learn the definition of a wave and the difference between transverse and longitudinal waves. You'll also learn the definition of the basic terms used to characterize waves; amplitude, period, frequency, and wavelength.

10049_The_equation_of_a_wave.html

10047_Introduction_to_waves.html

10048_Amplitude_period_frequency_and_wavelength_of_periodic_waves.html