单词 | ohm-centimetre |
释义 | > as lemmasohm-centimetre ohm-centimetre n. the unit of electrical resistivity in the cgs system, equal to 0.01 ohm-metre. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > resistance > [noun] > unit of resistance ohm1861 ohmad1865 ohm-centimetre1920 ohm-metre1935 milliohm1939 abohm1940 1920 W. T. Maccall Continuous Current Electr. Engin. (ed. 2) iii. 18 The resistance of a conductor 1 cm. long and 1 sq. cm. cross-section..is called the specific resistance per centimetre cube... A better name is ohm-centimetre (or microhm-cm.). 1957 H. Cotton Electr. Technol. (ed. 7) iii. 67 It is..logical to express ρ as so many ohms-centimetre..or ohm-metre [sic]... For example, for copper at normal room temperature ρ = 1·72 × 10−6 Ω-cm. 1974 Encycl. Brit. Micropædia VIII. 524/1 The resistivity of an exceedingly good electrical conductor, such as hard-drawn copper, at 20° C (68° F) is 1·77 × 10−8 ohm-metre, 1·77 × 10−6 ohm-centimetre, or 10·7 ohm-circular mils per foot. < as lemmas |
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