:::::::::If there were no differences, then a unified theory would exist. But it does not. Mass exerts a gravitational force that is fundamentally different from electromagnetism.--[[User:Aschlafly|Andy Schlafly]] 22:33, 20 March 2012 (EDT) | :::::::::If there were no differences, then a unified theory would exist. But it does not. Mass exerts a gravitational force that is fundamentally different from electromagnetism.--[[User:Aschlafly|Andy Schlafly]] 22:33, 20 March 2012 (EDT) |