Weak and Strong Interactions

The weak force and strong force are part of the four fundamental forces that govern all matter in the universe. The other two are gravity force and electromagnetic force. The weak force is effective at very short distances. It acts on the subatomic level. We can explain beta decay with the understanding of weak force processing. A neutron in a nucleus changes into a proton and expels an electron (a beta particle) and anti-neutrino. These last two particles are products of decay of another particle called W boson, which is very unstable. The strong force is created because of the color properties of quarks. Hadrons (protons, neutrons) have three quarks. Each of these quarks has a property called color. It has nothing common with colors which we see with our eyes. It represents an electric charge and quantum state of quarks. All three quarks have to produce colorless particle (red + green + blue). Quarks are constantly changing their color. They are exchanging particles called gluons. These gluons are the strong nuclear force.