IB Physics > Wave Phenomena
1 Measure
2 Mech
3 Therm
4 Waves
5 Electric
6 Fields
7 Atomic
8 EPCC
9 MIF
10 Therm AHL
11 Wave Phen
12 EMI
13 QNP
14 Digital
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DOPPLER EFFECT

STANDING WAVE
DOPPLER
DIFFRACTION
RESOLUTION
POLARISATION

VIEW THE DOPPLER EFFECT: DOPPLER APPLET

Describe what is meant by the Doppler effect.
doppler_car.gif
Explain the Doppler effect by reference to wavefront diagrams for moving-detector and moving-source situations.



Apply the Doppler effect equations for sound.
doppler_equation.gif


Solve problems on the Doppler effect for sound.

Problems will not include situations where both source and detector are moving.
doppler_ib_eqns.png
Solve problems on the Doppler effect for electromagnetic waves using the approximation
doppler_approx.png
Students should appreciate that the approximation may be used only when v << c.

This can also be written as Δλ=vλ/c

VERIFYING HUBBLE'S LAW USING HIS ORIGINAL DATA

dopplerstar.gif

Outline an example in which the Doppler effect is used to measure speed
Suitable examples include blood-flow measurements and the measurement of vehicle speeds.
DopplerBloodFlowDiag.gif
dopplerradar.gif
doppler_ib_eqns.png
Equations for IB data book