TRANSVERSE & LONGITUDINAL WAVES (Mechanical waves and sound)
Created by Sal Khan

(Amplitude, period, frequency and wavelength)
Created by Sal Khan.

WAVE INTERFERENCE (Mechanical waves and sound)
Waves add and subtract their amplitudes when they overlap.
Created by David SantoPietro.

STANDING WAVES ON STRINGS (Mechanical waves and sound)
How and why standing waves occur, and well as how to determine the wavelengths for a standing wave on a string.
Created by David SantoPietro.

THE DOPPLER EFFECT (Mechanical waves and sound)
Introduction to the Doppler Effect. Created by Sal Khan.