翻訳と辞書 Words near each other ・ Shear (sheet metal) ・ Shear and moment diagram ・ Shear band ・ Shear flow ・ Shear force ・ Shear forming ・ Shear Genius ・ Shear Genius (season 1) ・ Shear Genius (season 2) ・ Shear Genius (season 3) ・ Shear grab ・ Shear legs ・ Shear line ・ Shear line (locksmithing) ・ Shear Madness ・ Shear mapping ・ Shear matrix ・ Shear modulus ・ Shear pin ・ Shear rate ・ Shear strength ・ Shear strength (discontinuity) ・ Shear strength (soil) ・ Shear strength test ・ Shear stress ・ Shear thinning ・ Shear velocity ・ Shear wall ・ Shear Wave Elasticity Imaging ・ Shear wave splitting 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 Shear mapping ： ウィキペディア英語版 Shear mapping In plane geometry, a shear mapping is a linear map that displaces each point in fixed direction, by an amount proportional to its signed distance from a line that is parallel to that direction.〔Definition according to Weisstein, Eric W. (Shear ) From MathWorld − A Wolfram Web Resource〕 This type of mapping is also called shear transformation, transvection, or just shearing. An example is the mapping that takes any point with coordinates $(x,y)$ to the point $(x\; +\; 2y,y)$. In this case, the displacement is horizontal, the fixed line is the $x$-axis, and the signed distance is the $y$ coordinate. Note that points on opposite sides of the reference line are displaced in opposite directions. Shear mappings must not be confused with rotations. Applying a shear map to a set of points of the plane will change all angles between them (except straight angles), and the length of any line segment that is not parallel to the direction of displacement. Therefore it will usually distort the shape of a geometric figure, for example turning squares into non-square parallelograms, and circles into ellipses. However a shearing does preserve the area of geometric figures, the alignment and relative distances of collinear points. A shear mapping is the main difference between the upright and slanted (or italic) styles of letters. The same definition is used in three-dimensional geometry, except that the distance is measured from a fixed plane. A three-dimensional shearing transformation preserves the volume of solid figures, but changes areas of plane figures (except those that are parallel to the displacement). This transformation is used to describe laminar flow of a fluid between plates, one moving in a plane above and parallel to the first. In the general $n$-dimensional Cartesian space $\backslash mathbb^n$, the distance is measured from a fixed hyperplane parallel to the direction of displacement. This geometric transformation is a linear transformation of $\backslash mathbb^n$ that preserves the $n$-dimensional measure (hypervolume) of any set. ==Definition== 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「Shear mapping」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.