What is Quark?
Quark is a small theoretical particle that forms protons and neutrons in the atomic core. Along with the gluons, Quarks also form more exotic rags such as meson, which are not stable. This is called theoretical, because provided that its existence contributes to better physics theory, it has never been directly observed.
together with leptons - electrons, muons, tau and their associated neutrinos and anti -parties - quarks form all visible matter in the universe. They are the only basic particles that interact with each other in all four basic forces: strong nuclear force, weak nuclear force, electromagnetic force and gravity. The basic feature of these particles is imprisonment - all quarks form rags and are necessarily independent. The descriptions of their physical properties resulted in quantum chromodynamics (QCD), a theory of strong nuclear forces that hold the atomic core together.
as and all other subatomical particles, quarks can be exhausted by three quantum čnumber: spin j, parity p and weight m. Since they are never isolated, these properties must be derived by observing the larger particles that form. There are six known types: up, down, magic, strange, upper and bottom. These names are purely arbitrary and do not propose anything about the characteristics of each quark.
The normal thing that makes up most of the universe is made of quarks up and down that are lightest of particles. Proton is made of two up and one down while neutron is made of two down and one up.
Quarks have different masses that are measured in GeV (Giga Electron-Volts) through the speed of light to the other. Subatomical particles are measured in terms of energy, which they produce rather than weight in grams. The quark down is about twice as massive than up.Strange is about 20 times as massive as quark. Magic quark is about 10 times so massive, followed by a day that is about three timesAs massive as the last, and finally the upper quark, which is the smallest of all. Increasing matter tends to correspond to the lack of particles and requires more exotic physical conditions for its manifestation.
physicists are looking for a theorized quark, hypothetical grilles made of continuous quarks of the connected gluona. It is not yet known whether this type of matter is physically possible. If so, it would probably be found in the core of extremely compact stars that have not yet been blown into the black hole.