What Does Gravity Do?

There are two main forces that people are most familiar with, gravity and electromagnetism. The weak force is kind of a big mess - it has three particles that mediate it. It's much more complicated than any of the other forces. So when two particles that feel the weak force talk to each other, they do it through three different ways. But these three, the w plus, w minus an the z, we call these together the weak force.