The source of sound (red) is stationary. First, the listener (green) is stationary, then he moves toward the source, finally he moves away from the source.



The Doppler Effect states that the frequency increases when the source and observer approach each other and decreases when they move apart.



For other physics animations like this one, please visit http://web.ncf.ca/ch865.

Views: 2,861
Added: 13 years ago.