I distinctly remember that there's a comment by Arthur C Clarke somewhere to the effect that Heaviside was the first person to write down E = m*c^2, which is co

I distinctly remember that there's a comment by Arthur C Clarke somewhere to the effect that Heaviside was the first person to write down E = m*c^2, which is consistent with him having worked on "electromagnetic mass". This may also be mentioned in David Bohm's book, which I have somewhere but not easily to hand. If anyone can confirm this it would be extremely interesting.