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

Apply the Doppler effect equations for sound.

Solve problems on the Doppler effect for sound.

Problems will not include situations where both source and detector are moving.

Solve problems on the Doppler effect for electromagnetic waves using the approximation

Students should appreciate that the approximation may be used only when v << c.

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.

## DOPPLER EFFECT

IB Doppler effect flipVIEW THE DOPPLER EFFECT: DOPPLER APPLET

Describe what is meant by the Doppler effect.

Explain the Doppler effect by reference to wavefront diagrams for moving-detector and moving-source situations.

Apply the Doppler effect equations for sound.

Solve problems on the Doppler effect for sound.

Problems will not include situations where both source and detector are moving.

Solve problems on the Doppler effect for electromagnetic waves using the approximation

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

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.