| 单词 | abcoulomb |
| 释义 | > as lemmasabcoulomb Prefixed to the names of units (esp. of electrical and magnetic quantities) in the practical system to form the names of the corresponding units in the centimetre-gram-second electromagnetic system, as abampere, abcoulomb, abhenry, abohm, abvolt, abwatt, etc. Contrasted with stat- comb. form2.The use of this prefix was suggested 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, so units in the centimetre-gram-second system were no longer considered absolute, leading to the disuse of the prefix. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electric charge, electricity > [noun] > unit of measurement > practical units abwatt1904 the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > [noun] > magnetic flux > unit of flux > practical abvolt1904 the world > matter > physics > electromagnetic radiation > electricity > electric current > [noun] > unit of measurement ampere1881 amp1882 milliampere1885 kilampere1892 mA1896 kVA1905 kilovolt-ampere1909 microamp1923 milliamp1923 abampere1930 the world > matter > physics > electromagnetic radiation > electricity > resistance > [noun] > unit of resistance ohm1861 ohmad1865 ohm-centimetre1920 ohm-metre1935 milliohm1939 abohm1940 the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [noun] > inductance > unit of henry1890 abhenry1976 1904 A. E. Kennelly in Trans. Amer. Inst. Electr. Engineers 22 534 According to this plan the C. G. S. magnetic unit of e.m.f. would be the abvolt. 1921 A. E. Kennelly & K. Kurokawa in Proc. Amer. Acad. Arts & Sci. 56 41 Power at a point on an electric or acoustic conductor (watts or abwatts). 1930 A. Zeleny Elem. Electr. 402 The abcoulomb is the quantity of electricity that passes any plane in a circuit in 1 second when the current is 1 abampere. 1940 F. A. Fish Fund. Princ. Electr. & Magn. Circuits (ed. 3) iii. 28 The absolute unit, or abvolt, is that e.m.f. which will cause 1 abampere of current to flow in 1 abohm of resistance. 1976 Jrnl. Water Pollution Control Federation 48 196 (table) Abcoulomb..10 C... Abhenry..10-9 H. 1996 R. E. Cohen Physics Quick Ref. Guide ii. 30 The abampere is also known as the biot (Bi). < as lemmas |
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