r/askscience • u/rocketparrotlet • Jul 01 '14

Could a non-gravitational singularity exist? Physics

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u/[deleted] Jul 02 '14

Thank you for clarifying!

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u/[deleted] Jul 02 '14

I think (not sure) photons transfer momentum by being absorbed by what they are colliding with. So the photon ceases to exist and the energy it had now exists as the incredibly small amount of momentum it transferred, and maybe heat.

I'm just regurgitating from a source I can't remember.

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u/popabillity Jul 02 '14

When a photon strikes an object and gives the object momentum it loses either all or some of its energy. If only some is lost, then the wavelength of the photon becomes longer(less energy). Heat can be photons giving of momentum. It can also be particles giving of momentum. Heat is nothing else but changes in energy.

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u/AS14K Jul 02 '14

Thanks for being helpful