翻訳と辞書 Words near each other ・ Towns County, Georgia ・ Towns in Karachi ・ Towns in Mayo by population ・ Towns of ancient Greece ・ Towns of Belarus ・ Towns of the Costa del Sol ・ Towns of the People's Republic of China ・ Towns River ・ Townsbury, New Jersey ・ Townsend ・ Townsend & Wall ・ Townsend (CDP), Massachusetts ・ Townsend (CDP), Wisconsin ・ Townsend (Kent cricketer) ・ Townsend (name) ・ Townsend (unit) ・ Townsend Bell ・ Townsend Building ・ Townsend Cemetery ・ Townsend Church of England School ・ Townsend Coleman ・ Townsend County ・ Townsend Creek ・ Townsend Cromwell ・ Townsend D. Cock ・ Townsend deprivation index ・ Townsend discharge ・ Townsend Duryea ・ Townsend F. Dodd ・ Townsend Farm Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Townsend (unit) ： ウィキペディア英語版 Townsend (unit) The Townsend (symbol Td) is a physical unit of the reduced electric field (ratio E/N), where $E$ is electric field and $N$ is concentration of neutral particles. It is defined by the relation $1\; \backslash ,\; =\; 10^\; \backslash ,\; =\; 10^\; \backslash ,\; .$ For example, an electric field of $E\; =\; 2.5\; \backslash cdot\; 10^\; \backslash ,$ in a medium with density $N\; =\; 2.5\; \backslash cdot\; 10^\; \backslash ,\; \backslash ,$. This unit is important in gas discharge physics, where it serves as scaling parameter because the mean energy of electrons (and therefore many other properties of discharge) is typically a function of $E/N$ over broad range of $E$ and $N$. The concentration $N$, which is in ideal gas simply related to pressure and temperature, controls the mean free path and collision frequency. The electric field $E$ governs the energy gained between two successive collisions. Reduced electric field being a scaling factor effectively means, that increasing the electric field intensity ''E'' by some factor ''q'' has the same consequences as lowering gas density ''N'' by factor ''q''. It is named after John Sealy Townsend. ==See also== *Electric glow discharge *Vacuum arc 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Townsend (unit)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.