Doppler Effect 2

Continued from Doppler Effect 

If moves away from the source, then the wave received is less so that its frequency is lower. The formula for its frequency is :  

f’ = {(ν – ν_p)/ν}f

The conclusion of Doppler Effect :

a.       Source is in motion :

      Source approaches : use (-) sign (frequency is higher)

Source approaches : use (+) sign (frequency is lower)

b.      Observer is motion :

      Observer apppraeches : use (+) sign (frquency is higher)

Observer moves away : use (-) sign (frequency is lower)

moving sound sources in the circuit

shock wave frequency chart
ν = the sound speed
νs = the source relative speed to the observer
 f = the source frequency
f’ = the frequency heard by the observer            


continued >>> Doppler Effect
The next physics lesson on the process of Sonic Boom
Doppler Effect
Physics education for High School