strong force

The strong force is one of the four fundamental forces of nature, along with gravity, electromagnetism, and the weak force. It is the strongest of these four and also the one with the shortest range.The strong force is the interaction responsible for binding quarks and gluons to make hadrons.


Residual strong interactions provide the nuclear binding energy that holds protons and neutrons together in the atomic nucelus; in nuclear physics, the term strong interaction is also used for this residual effect. (As a parallel, the force between electrically charged particles is an electromagnetic interaction, the force between neutral atoms that leads to the formation of molecules is a residual electromagnetic effect.)