DOPPLER EFFECT
Doppler effect The (apparent) change in frequency (or pitch) of the
sound is detected by a listener because the sound
source and the listener have different velocities
relative to the medium of sound propagation.
Transverse wave Longitude wave
Light waves like; radio waves Sound waves
Moves through a medium ⇒ can’t hear without it &
goes in a vacuum
amplitude the maximum extent of a vibration or oscillation, measured from the
position of equilibrium.
Measures loudness
Cant be negative
Frequency Number of complete waves and is the inverse of the period
Frequency determines the pitch and energy
Energy and frequency are directionally proportional
The time taken for one complete wave in the medium
period
Speed of wave Frequency x wavelength or d/t
Doppler effect The (apparent) change in frequency (or pitch) of the
sound is detected by a listener because the sound
source and the listener have different velocities
relative to the medium of sound propagation.
Transverse wave Longitude wave
Light waves like; radio waves Sound waves
Moves through a medium ⇒ can’t hear without it &
goes in a vacuum
amplitude the maximum extent of a vibration or oscillation, measured from the
position of equilibrium.
Measures loudness
Cant be negative
Frequency Number of complete waves and is the inverse of the period
Frequency determines the pitch and energy
Energy and frequency are directionally proportional
The time taken for one complete wave in the medium
period
Speed of wave Frequency x wavelength or d/t
