V2EX thomson effect

Thomson Effect

Definition | 释义

汤姆孙效应:当电流通过一段存在温度梯度(一端热、一端冷)的导体时,导体内部会发生可逆的吸热或放热现象;其热量大小与电流、温度梯度以及材料的汤姆孙系数(Thomson coefficient)有关。它与塞贝克效应珀尔帖效应并称为三大热电效应。(注:在不同材料与温度范围内,吸热/放热方向可能不同。)

Pronunciation | 发音

/tmsn fekt/

Examples | 例句

The Thomson effect is usually small in common metals.
汤姆孙效应在常见金属中通常比较微弱。

When engineers model a thermoelectric generator, they may include the Thomson effect to account for reversible heating or cooling along a conductor with a temperature gradient.
工程师在对热电发电机建模时,可能会把汤姆孙效应纳入计算,用来解释导体在温度梯度下沿程出现的可逆吸热或放热。

Etymology | 词源

Thomson来自苏格兰物理学家William Thomson(开尔文勋爵,Lord Kelvin)的姓氏;他在19世纪对热电现象作出重要理贡献,因此该效应以其姓氏命名。effect源自拉丁语 effectus(结果、效应),指“产生的现象或作用”。

Related Words | 相关词汇

Literary Works | 文学与著作中的用例

  • William Thomson (Lord Kelvin), On the Dynamical Theory of Heat(热的动力学理论相关论文与论述中涉及热电关系与汤姆孙效应的理论背景)
  • Charles Kittel, Introduction to Solid State Physics(《固体物理导论》:热电效应章节常提及汤姆孙效应)
  • Neil W. Ashcroft & N. David Mermin, Solid State Physics(《固体物理》:输运与热电现象部分会讨论相关效应)
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