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Lumifer comments on Stupid Questions, December 2015 - Less Wrong Discussion

5 Post author: polymathwannabe 01 December 2015 10:40PM

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Comment author: polymathwannabe 10 December 2015 10:21:52PM 0 points [-]

Energy density is a function of mass, and photons have zero mass.

Comment author: Lumifer 10 December 2015 10:27:57PM 2 points [-]

Zero rest mass. Photons certainly have energy.

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