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Monday, 16 November 2009 07:13 |
- The Doppler effect occurs when on object that is emitting light is in motion with respect to the observer
- The speed of light does not change, only the wavelength
- If the object is moving towards the observer the light is ``compressed'' or blueshifted
- If the object is moving away from the observer the light is ``expanded'' or redshifted
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