The poise (symbol P; IPA: /pwɑːz/) is the unit of dynamic viscosity in the centimetre gram second system of units. Viscosity is a measure of the resistance of a Fluid which is being deformed by either Shear stress or Extensional stress. The centimetre-gram-second system ( CGS) is a system of physical units. It is named after Jean Louis Marie Poiseuille. Jean Louis Marie Poiseuille \pwä-'zəi\ ( April 22, 1799 - December 26, 1869) was a French Physician and Physiologist
- 1 P = 1 g·cm−1·s−1
The analogous unit in the International System of Units is the pascal second (Pa·s):
- 1 Pa·s = 1 kg·m−1·s−1 = 10 P
The poise is often used with the metric prefix centi-. Viscosity is a measure of the resistance of a Fluid which is being deformed by either Shear stress or Extensional stress. An SI prefix (also known as a metric prefix) is a name or associated symbol that precedes a unit of measure (or its symbol to form a Decimal multiple or A centipoise is one millipascal-second (mPa·s) in SI units. (1 cP = 10-2P = 10-3 Pa·s) Centipoise is properly abbreviated cP, but the alternate abbreviations cps and cPs are also commonly seen.
Water has a viscosity of 0. 0089 poise at 25 °C, or 1 centipoise at 20 °C.
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Dictionary
poise
-noun
- A state of balance, equilibrium or stability
- composure; freedom from embarrassment or affectation
- mien; bearing or deportment of the head or body
- A condition of hovering, or being suspended
- (physics) A cgs unit of dynamic viscosity equal to one dyne-second per square centimeter.
-verb
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