The four fundamental forces are the way that physical systems interact with each other. The four forces are: gravity, electromagnetism, strong nuclear force ( aka. strong force), and the weak nuclear force ( aka. weak force). Gravity is the force that attracts two bodies toward each other. The electromagnetic force controls how charged particles interact with each other. The strong force is the force that keeps protons and neurons together in the nuclei of atoms, and quarks together in the cores of protons and neutrons. As it's name suggests it is the strongest of the four forces. Lastly, the weak force is the force responsible for radioactive decay. All of these forces have gauge bosons, gauge bosons are particle that "carry that force". For example, in there is a field of particle A, then that field has the force A. The gauge boson for the electromagnetic force is the photon. That means a field of photons will give rise to the electromagnetic force. The weak force is mediated by three gauge bosons: W+, W-, and Z bosons. Gravity is hypotheticaly meditated by a theoretical particle called the graviton. Finally, the strong force is mediated by eight types of gluons. Gluons are the things that hold quarks together inside protons and neutrons. When two quarks exchange gluons, they get stuck together. In total there are twelve types gauge bosons.

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