| 单词 | baryon |
| 释义 | baryon Nucl. Physics.|ˈbærɪɒn|
[f. Gr. βαρύ-ς heavy + -on of electron2.]
Any hyperon other than the proton or neutron. Also attrib.
1953Prog. Theor. Physics X 457 It seems practical to have a collective name for these particles and other which possibly may still be discovered... It is proposed to use the fitting name ‘baryon’ for this purpose. 1958Physical Rev. CXII. 640/1 It is at this stage that we first explicitly meet S and N, the baryon number. 1959Sci. News LII. 99 Nucleons and hyperons, or baryons as they are called collectively. 1967New Scientist 22 June 724/1 Mesons could be composed of a quark plus an antiquark, baryons of three quarks.
Hence baryˈonic a., of or pertaining to a baryon or baryons; consisting of baryons.
1959Bull. Inst. Physics X. 140/1 The current solution is to ascribe to both the proton and the neutron a baryonic charge..which is always conserved. 1963S. Tolansky Introd. Atomic Physics (ed. 5) xxiii. 396 By postulating the conservation of this baryonic number in a closed system then we see that annihilation of protons by electrons is prevented. 1974Physics Bull. Dec. 579/1 The baryonic matter in the nucleus. 1982New Scientist 9 Sept. 689/3 Matter as we know it (baryonic matter, dominated by neutrons and protons) may make up less than 10 per cent of the gravitational mass of the Universe. |
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