I think that unification of gravity and electromagnetic forces is friction. Is it right?
Dear Student,
Forces between charged particles The moving charges produce magnetic effects. Electric and magnetic effects are inseparable; hence, the term electromagnetic. These forces may be attractive or repulsive. Electrostatic forces are 1036 times stronger than gravitational forces. Operate over small distances.
The final step of unification, past electroweak unification and grand unification, would be to add gravity to reach the final goal of one unified force. It has become popular to call such a unified theory a "theory of everything". It seems fair to say that we are a long way from understanding quantum gravity.
Regards
Forces between charged particles The moving charges produce magnetic effects. Electric and magnetic effects are inseparable; hence, the term electromagnetic. These forces may be attractive or repulsive. Electrostatic forces are 1036 times stronger than gravitational forces. Operate over small distances.
The final step of unification, past electroweak unification and grand unification, would be to add gravity to reach the final goal of one unified force. It has become popular to call such a unified theory a "theory of everything". It seems fair to say that we are a long way from understanding quantum gravity.
Regards