Vector flux

Japanese: vector flux(英語表記)vectorflux
Vector flux

... If there is a surface S in D , let us write its surface element as dS , and let us say that the surface element vector dS at a point on S is a vector whose direction is the normal n of S at that point and whose magnitude is dS . Let us write the n-th component of the vector field F at a point on S as F n , and define the surface integral as follows, and call this the vector flux passing through S.
[Gradient, Divergence, Rotation]
Given a scalar field φ( x , y , z ), the vector field with components (∂φ/∂ x , ∂φ/∂ y , ∂φ/∂ z ) is called the gradient of φ, or the gradient, and is denoted by ▽φ or gradφ.

*Some of the terminology explanations that mention "vector flux" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

D内の曲面Sがあるとき,その面要素をdSと書くことにし,またS上の点における面要素ベクトルdSとは,方向がその点におけるSの法線nの方向で大きさがdSなるベクトルを意味する。S上の点でのベクトル場Fn成分をFnと書くことにし,なる面積分を定義して,これをSを通過するベクトル流vector fluxという。
[勾配,発散,回転]
 スカラー場φ(x,y,z)が与えられたとき,(∂φ/∂x,∂φ/∂y,∂φ/∂z)を成分とするベクトル場をφの勾配,あるいはグラディエントgradientと呼び,▽φ,またはgradφで表す。…

※「vector flux」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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