Is gravity a form of electromagnetic radiation?

Question

Since gravity travels at speed of light, I would strongly suspect it's related in some respects to EMR.

Am I off base here, or do you think eventually there will be an inter-connection?

Answer 1

No, you're off-base because there is nothing electromagnetic about c. We call c "the speed of light" mainly for historical reasons, but it is much more fundamental than that. In other words, it just so happens that light travels at speed c, but that is incidental.

Fundamentally, c is the absolute invariant speed upon which all observers (or in General Relativity, all local observers) agree. Massless particles can only travel at such a speed, and massive particles can never reach it (since it is invariant).

So the fact effects of gravity travel at c really has nothing to do with electromagnetism. It's deeper than that. It is about the fact that the universe exhibits a particular symmetry.

Answer 2

gravity is sooo much weaker than electromagnetism. and it acts between neutral bodies and charged bodies.

Answer 3

Einstein and many others tried to link them. It was known as "the grand unification theory"

Answer 4

Gravity is one of the 4 fundamental forces of physics. Electromagnetism is another one. It is believed that there will be a Grand Unification Theory, relating gravity, electromagnetism, and the weak and nuclear forces. So there is supposed to be a relation, but all four forces are different, and mediated by their own field particles.

Nuclear: gluons

EM: photons

Weak: bosons

Gravity: gravitons