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  5. 7.2.3 The Doppler effect and red-shift

7.2.3 The Doppler effect and red-shift

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Revise Edexcel GCSE Physics 7.2.3 The Doppler effect and red-shift with the question bank and revision guides.

Describe that if a wave source is moving relative to an observer there will be a change in the observed frequency and wavelength. • Describe the red-shift in light received from galaxies at different distances away from the Earth.

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