Quote by elfmotat
When solving this equation, he found that EM waves travel at a speed given by:
[itex]v=\frac{1}{\sqrt{\mu_0 \epsilon _0}}[/itex]
, where μ_{0} and ε_{0} are the magnetic and electric constants.

Correct me if I'm wrong, but as I understand it, μ
_{0} and ε
_{0} are entities of the EM field only. This does not leave much room for confidence that other fields would propagate at a maximum speed of light.