What are the four forces?

One of the four fundamental forces, the electromagnetic force manifests itself through the forces between charges (Coulomb's Law) and the magnetic force, both of which are summarized in the Lorentz force law. read more

All four fundamental forces are believed to be related, and to unite into a single force at high energies on a minuscule scale, the Planck scale, but particle accelerators cannot produce the enormous energies required to experimentally probe this. read more

Four Forces Affect Things That Fly: Weight is the force of gravity. It acts in a downward direction—toward the center of the Earth. Lift is the force that acts at a right angle to the direction of motion through the air. Lift is created by differences in air pressure. read more