9 lines
695 B
HTML
9 lines
695 B
HTML
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Strong interactions
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There must be some kind of force that glues together the quarks in the proton, just like the
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electromagnetic force attaches the electron to the atomic nucleus. And like for electromagnetism,
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there must be messenger particle of this force, and also a kind of “charge”, called color, that will
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determine which particles take part in this interaction and whether two particles will attract or
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repel each other. This force is very different from electromagnetism: no particle that has a color
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can exist freely, they must be in a bound system. The messenger particles of this interaction are
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called gluons, and they themselves carry color, so they cannot exist freely either.
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