Coefficient of viscosity

Japanese: coefficient of viscosity(英語表記)coefficientofviscosity
Coefficient of viscosity

…τ is proportional to the velocity gradient and follows Newton's law of viscosity: τ = μ∂u / ∂y . The proportionality constant μ is called the coefficient of viscosity, or viscosity coefficient, and varies depending on the substance, being much larger in liquids than in gases. It also varies considerably with temperature; generally, in gases, it increases as the temperature rises, but in liquids, it decreases. …

*Some of the terms referring to "coefficient of viscosity" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…τは速度こう配に比例し,ニュートンの粘性法則, τ=μ∂u/∂yに従う。比例定数μは粘性率coefficient of viscosity,または粘性係数と呼ばれ,物質によって異なり,液体のほうが気体よりはるかに大きい。また温度によってもかなり変化し,一般に気体では温度が上昇するとそれにつれて増加するが,液体では逆に減少する。…

※「coefficient of viscosity」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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