单词 | statvolt |
释义 | > as lemmasstatvolt Prefixed to the names of units (esp. of electrical and magnetic quantities) in the practical system (cf. practical adj. 1c) to form the names of the corresponding units in the centimetre-gram-second electrostatic system, as statampere, statcoulomb, statfarad, statohm, statvolt. Originally contrasted with ab- comb. form.This element was introduced at a time when the centimetre-gram-second system of units was the dominant one, units in this system as such being considered absolute (cf. absolute unit n. at absolute adj. and n. Compounds 2). Later, the metre-kilogram-second system (and its successor, the International System of Units (SI)) prevailed, and units in the centimetre-gram-second system were no longer considered absolute, leading to disuse of the contrasting prefix ab-, but the use of terms formed with stat- has persisted to some degree in specialist contexts. ΚΠ 1904 A. E. Kennelly in Trans. Amer. Inst. Electr. Engineers 22 534 In a comprehensive system of electromagnetic terminology, the electric C.G.S. units should also be christened... They might be denoted by the prefix abstat. Thus the C.G.S. electric unit of e.m.f. would be the abstatvolt.] 1909 A. E. Kennelly in Proc. Amer. Philos. Soc. 48 145 The linear capacity of the system is therefore 0.3192 statfarad per cm. 1920 Proc. Amer. Philos. Soc. 59 365 Be is the electric flux density in ‘statgausses’. 1925 W. H. Timbie Elem. Electr. xvi. 584 A statcoulomb is a small unit of charge, one coulomb being equal to 3 × 109 statcoulombs. 1936 R. S. Glasgow Princ. Radio Engin. xiv. 415 1 farad = 10−9 abfarad = 9 × 1011 statfarads. 1958 E. U. Condon & H. Odishaw Handbk. Physics a–9/2 The cgs unit of charge is called the esu or the statcoulomb. It is the unit defined by using dynes of force and cm of distance and adopting 4πε0 = 1. 1963 H. G. Jerrard & D. B. McNeill Dict. Sci. Units 13 Ab units and stat units are connected by the relationship με = 1/c2. 2010 M. Mathis Un-unified Field xxiv. 303 This is one of the secrets of physics: the statcoulomb reduces to the same dimensions as mass, and the Coulomb is just mass per second. < as lemmas |
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