Mitä hadronit ovat?
In particle physics, a hadron (, "hadrós;" "stout, thick") is a composite particle made of two or more quarks held together by the strong force in a similar way as molecules are held together by the electromagnetic force. Most of the mass of ordinary matter comes from two hadrons, the proton and the neutron.
composite particle made of two or more quarks held together by the strong force in a similar way as molecules