出典:Wiktionary
出典:『Wiktionary』 (2025/07/11 17:37 UTC 版)
From Middle French viscosité, from Old French viscosité, from Medieval Latin viscositas; analysable as viscous + -ity.
viscosity (countable and uncountable, plural viscosities)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/01 20:32 UTC 版)
Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. In everyday terms (and for fluids only), viscosity is "thickness" or "internal friction". Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. Put simply, the less viscous the fluid is, the greater its ease of movement (fluidity).
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