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单词 seebeck
释义

Seebeckn.

Brit. /ˈsiːbɛk/, /ˈzeɪbɛk/, U.S. /ˈsiˌbɛk/, /ˈzeɪˌbɛk/
Origin: From a proper name. Etymon: proper name Seebeck.
Etymology: < the name of Thomas Johann Seebeck (1770–1831), German physicist, who observed that a circuit made from two dissimilar metals joined end-to-end would deflect a compass magnet when the junctions were at different temperatures ( Abhandl. der Königl. Akad. der Wissensch. zu Berlin: Phys. Klasse (1822–3) 265).
Physics.
1. Seebeck effect n. the phenomenon whereby a variation in electrical potential along the length of a conductor is produced by a variation in temperature along its length; cf. thermo-electricity n.The effect is typically observed when two thermoelectrically dissimilar conductors are joined, with the joined ends held at a different temperature from the opposite ends. This results in an electrical potential difference across the opposite ends. This potential difference provides the basis for measuring temperature in a thermocouple, and can also be used to generate electrical power.
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the world > matter > physics > electromagnetic radiation > electricity > [noun] > electricity produced by heat
thermo-electricity1823
Seebeck effect1885
1885 Jrnl. Chem. Soc. 48 1028 This force is also related to the Seebeck effect.
1903 Whittaker's Electr. Engineer's Pocket Bk. 99 If a junction between two dissimilar metals be heated or cooled, a flow of electricity will take place across the junction. If a current be passed through such a junction, a change of temperature will be produced. The former phenomenon is known as the Seebeck effect, the latter as the Peltier effect.
1973 J. G. Tweeddale Materials Technol. I. iv. 97 If an electric circuit is suitably completed a current will flow between the materials (the Seebeck effect).
1997 R. Decher Direct Energy Conversion ix. 243 The Seebeck effect and its related phenomena are minimal in metals. Its usefulness lies primarily in temperature measurement by means of the thermocouple.
2010 H. J. Goldsmid Introd. Thermoelectricity ii. 17 The Nernst effect also offers some advantages over the Seebeck effect in the detection of thermal radiation.
2. Seebeck coefficient n. the coefficient relating the potential difference produced between two points on a conductor which are at different temperatures to the temperature difference between them; (also) the coefficient relating the voltage generated by a pair of conductors joined as a thermocouple to the temperature difference between the two ends.Historically, the Seebeck coefficient of a material was quoted relative to a reference material such as lead or platinum. Now it is more commonly given in absolute form.
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1935 Proc. Royal Soc. A. 151 651 This assumption is found to follow from the phenomenon of reciprocity, and leads to a new relation connecting the Seebeck coefficient with the thermal and electrical conductivities of the material.
1972 Proc. Royal Soc. A. 329 460 The results obtained demonstrate that the Seebeck coefficients in quenched bismuth have returned to the values in the annealed condition.
2005 R. E. Newnham Properties of Materials xxi. 239 The Seebeck coefficients are about ±200 μV/K for p- and n-type Bi2Te3, depending on doping level.
This entry has been updated (OED Third Edition, March 2018; most recently modified version published online March 2022).
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n.1885
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