What is Poise?

Information about Poise

The poise (symbol P; IPA: /pwɑːz/) is the unit of dynamic viscosity in the centimetre gram second system of units. It is named after Jean Louis Marie Poiseuille.
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-. 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.
This chart shows concisely the most common way in which the International Phonetic Alphabet (IPA) is applied to represent the English language.

See International Phonetic Alphabet for English for a more complete version and Pronunciation respelling for English for phonetic
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Viscosity is a measure of the resistance of a fluid to deform under either shear stress or extensional stress. It is commonly perceived as "thickness", or resistance to flow.
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centimetre-gram-second system (CGS) is a system of physical units. It is always the same for mechanical units, but there are several variants of electric additions. It was replaced by the MKS, or metre-kilogram-second system, which in turn was replaced by the International
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Jean Louis Marie Poiseuille \pwäz-'wē\ (April 22, 1799 - December 26, 1869) was a French physician and physiologist.

Poiseuille was born in Paris, France.

From 1815 to 1816 he studied at the École Polytechnique in Paris. He was trained in physics and mathematics.
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Si, si, or SI may refer to (all SI unless otherwise stated):

In language:
  • One of two Italian words:
  • sì (accented) for "yes"
  • si

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Viscosity is a measure of the resistance of a fluid to deform under either shear stress or extensional stress. It is commonly perceived as "thickness", or resistance to flow.
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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 submultiple.
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