The centipoise (cP) is the most widely used practical unit of dynamic viscosity. One centipoise equals 10⁻³ Pa·s. Water at 20°C has a viscosity of approximately 1 cP. The unit is used extensively in the petroleum, paint, and food industries.
Poise
The poise (P) is the CGS unit of dynamic viscosity, named after the French physicist Jean Léonard Marie Poiseuille. One poise equals 0.1 Pa·s or 100 centipoise. Water at 20°C has a viscosity of approximately 0.01 P (1 cP), while motor oil is around 1–3 P.
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