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.
Centipoise
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.
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