Androcles wrote:
"Ken S. Tucker" wrote in message
oups.com...

| Relativity does predict/explain magnetism too, but
| much more, like E-mc^2 etc...

That's zero, isn't it?

Yes, Absolute motion =0, I write that as

0 = U_i = dx_i/ds , i=1,2,3.

That's Theory of Relativity in a nut-shell.
Ken