翻訳と辞書 Words near each other ・ Paipai people ・ Paipharob Kokietgym ・ Paiporta ・ Paippad ・ Paippad Puthenkavu Bhagavathi Temple ・ Paipra ・ Paipra Radhakrishnan ・ PAIR ・ Pair ・ Pair (parliamentary convention) ・ PAIR (puncture-aspiration-injection-reaspiration) ・ Pair a Dice Found ・ Pair bond ・ Pair by association ・ Pair Dadeni ・ Pair distribution function ・ Pair gain ・ Pair Of Dice Paradise ・ Pair of Kings ・ Pair of pants (mathematics) ・ Pair of spaces ・ Pair potential ・ Pair production ・ Pair programming ・ Pair skating ・ Pair testing ・ Pair trawling ・ Pair-conversion ・ Pair-et-Grandrupt ・ Pair-instability supernova 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 Pair distribution function ： ウィキペディア英語版 Pair distribution function The pair distribution function (PDF) describes the distribution of distances between pairs of particles contained within a given volume. Mathematically, if ''a'' and ''b'' are two particles in a fluid, the PDF of ''b'' with respect to ''a'', denoted by $g\_(\backslash vec)$ is the probability of finding the particle ''b'' at the distance $\backslash vec$ from ''a'', with ''a'' taken as the origin of coordinates. == Overview == The pair distribution function is used to describe the distribution of objects within a medium (for example, oranges in a crate or nitrogen molecules in a gas cylinder). If the medium is homogeneous (i.e. every spatial location has identical properties), then there is an equal probability density for finding an object at any position $\backslash vec$: :$p(\backslash vec)=1/V$, where $V$ is the volume of the container. On the other hand, the likelihood of finding ''pairs of objects'' at given positions (i.e. the two-body probability density) is not uniform. For example, pairs of hard balls must be separated by at least the diameter of a ball. The pair distribution function $g(\backslash vec,\backslash vec)$ is obtained by scaling the two-body probability density function by the total number of objects $N$ and the size of the container: :$g(\backslash vec,\; \backslash vec\text{'})\; =\; p(\backslash vec,\backslash vec\text{'})\; V^2\; \backslash frac$. In the common case where the number of objects in the container is large, this simplifies to give: :$g(\backslash vec,\; \backslash vec\text{'})\; \backslash approx\; p(\backslash vec,\backslash vec\text{'})\; V^2$. 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「Pair distribution function」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.