Confinement is the physics phenomenon that quarks cannot be isolated. The color-charged quarks are confined with other quarks by the strong interaction to form pairs or triplets so that the net color is neutral. The force between quarks increases as the distance between them increases, so no quarks can be found individually.
... vanitatum mundi. It consists
of four books and seems to have been written in
meter and rime, a fact first announced by K.
Hirsche in 1874. The four books are not found ...