Doppler Effect
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Blue shift
Doppler effect for light showing the shorter wavelength for light from an object moving towards the observer.
The wave gets spread out, the wavelength gets longer and the frequency gets lower
If a wave source is moving away from you, what happens to the wave?
It gets 'bunched up' and the wavelength gets shorter and the frequency higher
If a wave source is moving towards you, what happens to the wave?
Red Shift
The doppler effect with light, showing a longer wavelength for objects moving away from the observer.
Doppler Shift
change in the apparent frequency of a wave as observer and source move toward or away from each other
