Editing Quantum chromodynamics (section)

==Terminology==
Physicist [[Murray Gell-Mann]] coined the word ''quark'' in its present sense. It originally comes from the phrase "Three quarks for Muster Mark" in ''[[Finnegans Wake]]'' by [[James Joyce]]. On June 27, 1978, Gell-Mann wrote a private letter to the editor of the ''Oxford English Dictionary'', in which he related that he had been influenced by Joyce's words: "The allusion to three quarks seemed perfect." (Originally, only three quarks had been discovered.)<ref>
{{cite book
 | last = Gell-Mann
 | first = Murray
 | author-link =Murray Gell-Mann
 | title = The Quark and the Jaguar
 | publisher = [[Owl Books]]
 | year = 1995
 | isbn = 978-0-8050-7253-2
}}</ref>

The three kinds of [[Charge (physics)|charge]] in QCD (as opposed to one in [[quantum electrodynamics]] or QED) are usually referred to as "[[color charge]]" by loose analogy to the three kinds of [[color]] (red, green and blue) [[color vision|perceived by humans]]. Other than this nomenclature, the quantum parameter "color" is completely unrelated to the everyday, familiar phenomenon of color.

The force between quarks is known as the '''colour force'''<ref>[[wikt:colour force]]</ref> (or '''color force'''<ref>{{cite web |url=http://hyperphysics.phy-astr.gsu.edu/hbase/Forces/color.html |title=The Color Force |access-date=2007-08-29 |url-status=live |archive-url=https://web.archive.org/web/20070820075205/http://hyperphysics.phy-astr.gsu.edu/hbase/forces/color.html |archive-date=2007-08-20 }} retrieved 6 May 2017</ref>) or [[strong interaction]], and is responsible for the [[nuclear force]].

Since the theory of electric charge is dubbed "[[electrodynamics]]", the [[Ancient Greek|Greek]] word {{lang|grc|χρῶμα}} ({{lang|grc-Latn|chrōma}}, "color") is applied to the theory of color charge, "chromodynamics".