superconductivityn.

Brit.

/ˌsuːpəˌkɒndʌkˈtɪvᵻti/,

/ˌsjuːpəˌkɒndʌkˈtɪvᵻti/, U.S.

/ˈˌsupərˌkɑndəkˈtɪvədi/

Origin: Formed within English, by derivation. Etymons: super- prefix, conductivity n.

Etymology: < super- prefix + conductivity n., after superconductive adj. Compare superconduction n., supraconduction n., and supraconductivity n.

Physics.

The property of having no electrical resistance, exhibited by some substances at very low temperatures (originally, close to absolute zero).For some years after the discovery of superconductivity it was thought that it was only manifested at temperatures below about 30°K, in accordance with the theoretical explanation (the BCS theory) that had been developed to explain it. Since the 1980s superconductivity has been found in certain solids at significantly higher temperatures.A noteworthy characteristic of superconductivity is the expulsion of a magnetic field from an object when it becomes superconducting, unless the field is very strong (cf. Meissner effect n.).

ΘΚΠ

the world > matter > physics > solid state physics > superconductivity > [noun]

superconduction1913

superconductivity1913

supraconductivity1914

supraconduction1920

1913 H. K. Onnes in Proc. Sect. Sci. K. Akad. Wetensch. Amsterdam 15 1428 (heading) Experiments on the possible influence of contact with an ordinary conductor upon the superconductivity of mercury.

1934 Times Lit. Suppl. 26 July 531/3 A similar property of superconductivity, acquired at specific low temperatures, has since been found also in a number of other metals and in certain alloys.

1978 Jrnl. Royal Soc. Arts 126 608/2 Superconductivity..offers the prospect of lower capital costs and higher efficiencies than conventional generators for large units.

1993 R. J. Pond Introd. Engin. Technol. (ed. 2) x. 297 The most important future application for ceramics is high-temperature superconductivity (HTSC).

2010 Vanity Fair (N.Y.) Jan. 92/1 The connection ‘quenched’—which means a super-conducting cable suddenly lost its super-conductivity, turning into an ordinarily conductive wire that couldn't take the 11,000 amps of electricity.

This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).

单词	superconductivity
释义	superconductivityn. Brit. /ˌsuːpəˌkɒndʌkˈtɪvᵻti/, /ˌsjuːpəˌkɒndʌkˈtɪvᵻti/, U.S. /ˈˌsupərˌkɑndəkˈtɪvədi/ Origin: Formed within English, by derivation. Etymons: super- prefix, conductivity n. Etymology: < super- prefix + conductivity n., after superconductive adj. Compare superconduction n., supraconduction n., and supraconductivity n. Physics. The property of having no electrical resistance, exhibited by some substances at very low temperatures (originally, close to absolute zero).For some years after the discovery of superconductivity it was thought that it was only manifested at temperatures below about 30°K, in accordance with the theoretical explanation (the BCS theory) that had been developed to explain it. Since the 1980s superconductivity has been found in certain solids at significantly higher temperatures.A noteworthy characteristic of superconductivity is the expulsion of a magnetic field from an object when it becomes superconducting, unless the field is very strong (cf. Meissner effect n.). ΘΚΠ the world > matter > physics > solid state physics > superconductivity > [noun] superconduction1913 superconductivity1913 supraconductivity1914 supraconduction1920 1913 H. K. Onnes in Proc. Sect. Sci. K. Akad. Wetensch. Amsterdam 15 1428 (heading) Experiments on the possible influence of contact with an ordinary conductor upon the superconductivity of mercury. 1934 Times Lit. Suppl. 26 July 531/3 A similar property of superconductivity, acquired at specific low temperatures, has since been found also in a number of other metals and in certain alloys. 1978 Jrnl. Royal Soc. Arts 126 608/2 Superconductivity..offers the prospect of lower capital costs and higher efficiencies than conventional generators for large units. 1993 R. J. Pond Introd. Engin. Technol. (ed. 2) x. 297 The most important future application for ceramics is high-temperature superconductivity (HTSC). 2010 Vanity Fair (N.Y.) Jan. 92/1 The connection ‘quenched’—which means a super-conducting cable suddenly lost its super-conductivity, turning into an ordinarily conductive wire that couldn't take the 11,000 amps of electricity. This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022). < n.1913
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