| 释义 |
Peltier2 Physics.|ˈpɛltɪeɪ|
The name of J. C. A. Peltier (1785–1845), French amateur scientist, used attrib. with reference to an effect he discovered in 1834, whereby heat is given out, or absorbed, when an electric current passes across a junction between two materials; Peltier coefficient, (a) the quantity of heat liberated or absorbed at a junction between two conductors when unit charge passes between them; (b) of a material, the quantity of heat liberated or absorbed when unit electric charge traverses a junction between that material and a reference conductor.
1856Proc. R. Soc. VII. 54, I hope also to be able to make determinations in absolute measure of the amount of the Peltier effect for a given strength of current between various pairs of metals. 1896Foster & Atkinson Elem. Treat. Electr. & Magn. xiv. 135 This coefficient, known as the Peltier coefficient,..represents for a junction of any two metals the amount of energy converted into or produced from heat per second when a current of unit strength traverses the junction. 1904J. S. Ames Text-bk. Gen. Physics xliv. 681 These forces at the surface of contact of two substances are called ‘Peltier electro-motive forces’, having been first discovered by him. 1916F. B. Pidduck Treat. Electr. vi. 210 In addition to the Peltier heat there is the usual heat developed by the mere passage of the current through the wires. 1958Condon & Odishaw Handbk. Physics iv. vi. 84/2 The Peltier coefficient for a junction AB is representable as the difference of two intrinsic Peltier coefficients characteristic of each material separately. 1966McGraw-Hill Encycl. Sci. & Technol. XIII. 581/2 If 1 coulomb of positive charge moves slowly around the circuit, there will be Peltier cooling in its passage from Bi to Cu at T and Peltier heating at T0. 1972R. W. Ure in Willardson & Beer Semiconductors & Semimetals VIII. ii. 68 The Peltier effect at the junction between the liquid and solid phases has been used to remove the latent heat of crystallization in crystal growth. |