mknewman writes "MSNBC is reporting that scientists are finding differences in many of the current scientific 'constants' including the speed of light, alpha (the fine structure constant of the magnetic force), the ratio of proton to electron mass and several others. These findings were made by observing quasars and comparing the results to tests here on the earth." From the article: "Time-varying constants of nature violate Einstein's equivalence principle, which says that any experiment testing nuclear or electromagnetic forces should give the same result no matter where or when it is performed. If this principle is broken, then two objects dropped in a gravitational field should fall at slightly different rates. Moreover, Einstein's gravitational theory -- general relativity -- would no longer be completely correct, Martins says."
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