Monday, February 4, 2008

On Thursday we took notes on the Doppler Effect. In this picture we see the Doppler effect at work. When the car approaches with its siren blasting, the siren is high pitched because of its high frequency and the sound waves are closer together. After the car passes by, the siren is a lower pitch because of low frequency and the waves are spread further apart. The Doppler effect is how the sound waves shift in frequency when +produced by a moving source.
Approaching-Higher Frequency
-Higher Pitch
Receding-Lower Frequency
-Lower Pitch

1 comment:

Taryn M said...

Liz- I really liked the picture that you included in your summery. It's easier to learn from pictures than from words so it was really helpful. Good job!