ensabah6 Messages 691 Reaction score 0 Thread starter Apr 13, 2009 #1 The equivalence principle in GR states inertial mass and gravity are equivalent, what about massless particles?
The equivalence principle in GR states inertial mass and gravity are equivalent, what about massless particles?
atyy Science Advisor Messages 15,171 Reaction score 3,379 Apr 13, 2009 #2 http://arxiv.org/abs/gr-qc/9909014