Stated simply, the Doppler effect is a change in the observed frequency of a wave caused by relative motion between the source of the waves and the observer receiving them. When the waves are sound waves, the change in frequency is perceived as a change in pitch.
Answers & Comments
Answer:
Stated simply, the Doppler effect is a change in the observed frequency of a wave caused by relative motion between the source of the waves and the observer receiving them. When the waves are sound waves, the change in frequency is perceived as a change in pitch.