Rhea Posted September 28, 2004 Report Share Posted September 28, 2004 From the little that I understand about relativity, a photon should have mass zero. Well if it hasmass zero how doesgravityfrom ablack hole (for example)affect it. If you plug in zero for the mass of a photon into the gravity equation F=G(Mm)/R^2 you will get zero. I am confused! someone please help. Link to comment Share on other sites More sharing options...
Tormod Posted September 28, 2004 Report Share Posted September 28, 2004 Hi Rhea! This question is answered at Cornell University's Ask a Scientist website: Do photons have mass? If not, then how does gravity affect light (i.e. Black holes)?http://www.ccmr.cornell.edu/education/ask/?quid=240 Hope this is what you're looking for. Link to comment Share on other sites More sharing options...
Freethinker Posted September 28, 2004 Report Share Posted September 28, 2004 Now Tormod, You know the FAQ! No posting links without expounding! Link to comment Share on other sites More sharing options...
Rhea Posted September 28, 2004 Author Report Share Posted September 28, 2004 Thanks Tormod! That is what I wanted to know. Link to comment Share on other sites More sharing options...
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