%0 Journal Article
%T Kinetic Energy and the Equivalence Principle
%A S. Carlip
%J Physics
%D 1999
%I arXiv
%R 10.1119/1.18885
%X According to the general theory of relativity, kinetic energy contributes to gravitational mass. Surprisingly, the observational evidence for this prediction does not seem to be discussed in the literature. I reanalyze existing experimental data to test the equivalence principle for the kinetic energy of atomic electrons, and show that fairly strong limits on possible violations can be obtained. I discuss the relationship of this result to the occasional claim that ``light falls with twice the acceleration of ordinary matter.''
%U http://arxiv.org/abs/gr-qc/9909014v1