They work because certain materials, such as bismuth telluride, generate an electrical potential difference within themselves if one part is hotter than another.
它们之所以能起作用是因为某些材料,比如碲化铋,如果其中一部分比另一部分热,内部就会产生电位差。
单词 | Electrical potential difference |
释义 |
Electrical potential difference
原声例句
经济学人-科技 They work because certain materials, such as bismuth telluride, generate an electrical potential difference within themselves if one part is hotter than another. 它们之所以能起作用是因为某些材料,比如碲化铋,如果其中一部分比另一部分热,内部就会产生电位差。
中文百科
电势 Electric potential(重定向自Electrical potential difference)
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电势(electric potential),是静电学里的专有名词,定义为处于电场中某个位置的单位电荷所具有的电势能。电势又称为电位,是纯量。其数值不具有绝对意义,只具有相对意义,因此为了便于分析问题,必须设置一个参考位置,并把它设为零,称为零势能点。通常,会把无穷远处的电势设置为零。那么,电势可以定义如下:假设检验电荷从无穷远位置,经过任意路径,克服电场力,缓慢地移动到某位置,则在这位置的电势,等于因迁移所做的机械功与检验电荷量的比值。在国际单位制里,电势的度量单位是伏特(Volt),是为了纪念意大利物理学家亚历山德罗·伏打(Alessandro Volta)而命名。
英语百科
Electric potential 电势(重定向自Electrical potential difference)
![]() ![]() ![]() An electric potential (also called the electric field potential or the electrostatic potential) is the amount of electric potential energy that a unitary point electric charge would have if located at any point in space, and is equal to the work done by an external agent in carrying a unit of positive charge from the arbitrarily chosen reference point (usually infinity) to that point without any acceleration. |
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