翻訳と辞書 Words near each other ・ N-Prize ・ N-Propyl azide ・ N-Propyl chloride ・ N-Propyl iodide ・ N-Propyl-L-arginine ・ N-Reactor ・ N-red crown (n hieroglyph) ・ N-rule (Icelandic language) ・ N-SAT-110 ・ N-Secure ・ N-Sider ・ N-skeleton ・ N-body choreography ・ N-body problem ・ N-body simulation ・ N-body units ・ N-bomb ・ N-Bromosuccinimide ・ N-Butanol ・ N-Butylamine ・ N-Butyllithium ・ N-carbamoyl-D-amino acid hydrolase ・ N-carbamoyl-L-amino-acid hydrolase ・ N-carbamoylase ・ N-carbamoylputrescine amidase ・ N-carbamoylsarcosine amidase ・ N-category number ・ N-Chlorosuccinimide ・ N-class blimp ・ N-class ferry 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 N-body units ： ウィキペディア英語版 N-body units = \frac \sum_^ \frac \right| } |- | Mass (M) | $M\; =\; \backslash sum\_^\; m\_i$ |} N-body units are a completely self-contained system of units used for N-body simulations of self-gravitating systems in astrophysics. In this system, the base physical units are chosen so that the total mass, ''M'', the gravitational constant, ''G'', and the virial radius, ''R'', are normalized. The underlying assumption is that the system of ''N'' objects (stars) satisfies the virial theorem. The consequence of standard N-body units is that the velocity dispersion of the system, ''v'', is $\backslash scriptstyle\; \backslash frac\backslash sqrt$ and that the dynamical or crossing time, ''t'', is $\backslash scriptstyle\; 2\backslash sqrt$. The use of standard N-body units was advocated by Michel Hénon in 1971. Early adopters of this system of units included H. Cohn in 1979 and D. Heggie and R. Mathieu in 1986. At the conference (MODEST14 ) in 2014, D. Heggie proposed that the community abandon the name "N-body units" and replace it with the name "Hénon units" to commemorate the originator.〔http://www.astro.uni-bonn.de/~sambaran/DS2014/Modest14_Talks/Heggie.pdf〕 ==References== 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「N-body units」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.