坡印亭定理 Poynting's theorem
(重定向自Poynting Theorem)
在电磁学中,坡印亭定理(或称坡印廷定理)是用偏微分方程陈述的关于电磁场的能量守恒的定理,由英国物理学家约翰·坡印亭(John Poynting)发现。坡印亭定理类似于经典力学中的动能定理,在数学形式上与连续性方程相似。它把能量密度u的时间导数,与能量的流动,以及与电磁场做功的速率联系起来。
单词 | Poynting Theorem |
释义 |
Poynting Theorem
中文百科
坡印亭定理 Poynting's theorem(重定向自Poynting Theorem)
在电磁学中,坡印亭定理(或称坡印廷定理)是用偏微分方程陈述的关于电磁场的能量守恒的定理,由英国物理学家约翰·坡印亭(John Poynting)发现。坡印亭定理类似于经典力学中的动能定理,在数学形式上与连续性方程相似。它把能量密度u的时间导数,与能量的流动,以及与电磁场做功的速率联系起来。
英语百科
Poynting's theorem 坡印亭定理(重定向自Poynting Theorem)
In electrodynamics, Poynting's theorem is a statement of conservation of energy for the electromagnetic field, in the form of a partial differential equation, due to the British physicist John Henry Poynting. Poynting's theorem is analogous to the work-energy theorem in classical mechanics, and mathematically similar to the continuity equation, because it relates the energy stored in the electromagnetic field to the work done on a charge distribution (i.e. an electrically charged object), through energy flux. |
随便看 |
|
英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。