hy, there is nothing in Maxwells equations that would limit the speed of light. the only way one can get light speed, is to assume that em waves solve Maxwells equations and then one gets c as the square root of something out from Maxwells equations. the same goes for gravity waves, only observation makes one assume that space does not adjust immediately to change of mass distribution. am i wrong in this assumption or is there something that comes out of the math, that limits light waves??