| 单词 | truth quark |
| 释义 | > as lemmastruth quark 13. Particle Physics. One of the flavours (flavour n. 5) that characterize quarks and leptons, more often termed top (top n.1 38); a quark with this flavour (also truth quark). [Apparently named, along with its counterpart beauty (beauty n. 7), with allusion to the expression beauty is truth, truth beauty in John Keats's poem Ode on a Grecian Urn (compare quot. 1820 at sense A. 6a); for similar application of an abstract noun of quality to flavours, compare earlier charm n.1 6. These flavours are usually represented in notation by the letters t and b; their alternative designations top and bottom are attested from the same date.] ΘΚΠ the world > matter > physics > atomic physics > particle physics > quark > [noun] > differentiating property > top or truth truth1976 top1977 t1978 1976 Sci. News 26 June 409/3 Beyond charm and color, says one theorist, come ‘truth’ and ‘beauty’. These would require two new quarks, a true, or maybe truthful, quark and a beautiful one. 1977 New Scientist 8 Sept. 590/3 If the upsilon does contain a fifth quark a search will immediately be on for the sixth (‘truth’ or ‘top’). 1983 Farmington (New Mexico) Daily Times 15 May a11/3 This missing quark is the so-called ‘top’ or ‘truth’ quark. 2001 V. L. Ginzburg Physics of Lifetime 55 The t quarks of the sixth flavor, with a charge of 2/3 (known as top or truth quarks), proved to be especially difficult to find. 2013 S. T. Thornton & A. Rex Mod. Physics (ed. 4) xiv. 537 These last two quarks [sc. top quark and bottom quark] are sometimes called truth and beauty. < as lemmas |
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