THE DOPPLER EFFECT: The Doppler effect is observed when the frequency of a sound heard from an approaching source is raised above that of a stationary source. For example the pitch of a
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THE DOPPLER EFFECT: The Doppler effect is observed when the frequency of a sound heard from an approaching source is raised above that of a stationary source. For example the pitch of a police cars siren falls as it passes by on the street. In this laboratory experiment, using sound, the relationship between observed frequency shift and velocity of source is examined, also the effect where the source and observer are stationary but the sound is reflected from a moving object.
