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I know this sounds stupid. Especially to those of you who are actual physicists. I am a 7th grade above-level student who knows a little bit more that the basics of physics. I have recently discovered quarks in searching about atoms and the makeup of Nitrogen-14. I know that we have known about quarks for a while now, but exactly HOW long have we known about them? Who discovered them, and when?

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    $\begingroup$ did you try to search for quark history on wikipedia or google ? or just quark $\endgroup$ – user46925 Feb 4 '16 at 14:36
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    $\begingroup$ If it's hard to deal with Wikipedia, click here and read a few paragraphs: en.wikipedia.org/wiki/Quark#History $\endgroup$ – Luboš Motl Feb 4 '16 at 14:42
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    $\begingroup$ Aw, man. Down votes! Yes, he could have looked it up. Sure tell him so. But give a guy a break. $\endgroup$ – mmesser314 Feb 4 '16 at 15:14
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who discovered [quarks]

According to Wikipedia:

The quark model was independently proposed by physicists Murray Gell-Mann and George Zweig ...


and when

The Wikipedia article continues:

... in 1964.

The proposal came shortly after Gell-Mann's 1961 formulation of a particle classification system known as the Eightfold Way—or, in more technical terms, SU(3) flavor symmetry. Physicist Yuval Ne'eman had independently developed a scheme similar to the Eightfold Way in the same year.

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