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Old Dec 7th 2010, 07:37 AM   #1
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Question Are there any changing in energy-momentum of photon in different frame?

When we consider a photon in different frames,are there any changing in energy-momentum of photon from one to another frame?(Example:considering Compton process in different frame (e.x lab and center of mass frame))
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Old Dec 17th 2010, 12:51 PM   #2
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Originally Posted by ndung View Post
When we consider a photon in different frames,are there any changing in energy-momentum of photon from one to another frame?(Example:considering Compton process in different frame (e.x lab and center of mass frame))

Yes.

Find the difference in frequency in the two frames by using the Doppler effect. Remember that E=hf.

Regarding your example: A photon has zero rest mass.
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