Strange quarks are found in subatomic particles called hadrons. Charm quarks are found in hadrons, which are subatomic particles made of quarks. Neutrons and protons were found to be hadrons, or composites of smaller particles called quarks. Massless virtual gluons compose the numerical majority of particles inside hadrons. The nuclear force acts between hadrons, known as mesons and baryons. This effect confines quarks within hadrons. They could detect and distinguish between leptons, hadrons and photons. Due to this force, quarks are confined within composite particles called hadrons. The force mediators for these are other hadrons called mesons. Quarks are the fundamental constituents of hadrons and interact via the strong force. These pairs bind with the quarks being separated, causing new hadrons to form. Many other hadrons and massive bosons also decay electromagnetically. At first, quarks are still confined and we create a gas of hadrons (pions, mostly). Pions are the lightest mesons and, more generally, the lightest hadrons. However, no other muons, electrons, photons, or hadrons were detected.