poise

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A c.g.s. unit of viscosity equal to the tangential force in dynes per square centimetre required to maintain a difference in velocity of one centimetre per second between two parallel planes of a fluid separated by one centimetre. 1 poise is equal to 10⁻¹ N s m⁻².

[Etymology: J. L. M. Poiseuille; France 1799-1869] dynamic viscosity. Symbol P. Metric-c.g.s. Identically dyne·second per square centimetre (dyn·s·cm^-2) = 10^-1 N·s·m^-2 = 10^-1Pa·s(= cm^-1·g·s^-1 in c.g.s. base terms). Hence

• P·(g·cm^-3)^-1 = stokes for kinematic viscosity.

The poise is a large unit for most purposes, water at 20°C having a viscosity of 10.020~ mP and most free-flowing liquids typically being similar; gases are around 1 μP. There is no equivalent special term in the SI.

noun

1. A stable, calm state of the emotions: aplomb, balance, collectedness, composure, coolness, equanimity, imperturbability, imperturbableness, nonchalance, sang-froid, self-possession, unflappability. Slang cool. See calm/agitation, feelings.
2. Freedom from constraint, formality, embarrassment, or awkwardness: casualness, ease, easiness, informality, naturalness, spontaneity, unceremoniousness, unrestraint. See restraint/unrestraint, tighten/loosen.

verb

1. To place or be placed on a narrow or insecure surface: balance, perch. See posture.
2. To remain stationary over a place or object: hang, hover. See hang.

Definition: self composure, dignity
Antonyms: excitedness

v

Definition: balance, suspend
Antonyms: drop, fall

The CGS unit of viscosity; it is the tangential force per unit area (measured in dynes per square centimetre) required to maintain unit difference in velocity between two parallel planes separated by 1 cm fluid.

To convert from poise to:

gram/cm sec, multiply by 1.

The unit of viscosity of a liquid; the number of grams per centimeter per second. Centipoise, 0.01 poise, is the standard unit used.

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The poise (symbol P, /ˈpɔɪz/) is the unit of dynamic viscosity in the centimetre gram second system of units. It is named after Jean Louis Marie Poiseuille (and not related to the ordinary word poise, even though its meaning might seem connected).

The analogous unit in the International System of Units is the pascal second (Pa·s):

The poise is often used with the metric prefix centi-. A centipoise is one one-hundredth of a poise, and one millipascal-second (mPa·s) in SI units. (1 cP = 10⁻² P = 10⁻³ Pa·s = 1 mPa·s)

Centipoise is properly abbreviated cP, but the alternative abbreviations cps, cp, and cPs are also commonly seen.

Water has a viscosity of 0.00899 Poise at 25 °C and a pressure of 1 atmosphere. (0.00899 P = 0.899cP = 0.899 mPa·s) ^[1]

Use in laboratory

A viscometer can be used to measure centipoise.

When determining centipoise, all other fluids are calibrated to the viscosity of distilled water at STP. (in some practices, one can use the following approximation: water at approximately 70 °F (21 °C) is about one centipoise).

Thicker liquids, like honey, have higher viscosities. For example, while ethylene glycol has a viscosity of just 24 centipoise at 23 C, honey has a viscosity of 2 000 centipoise and molasses has a viscosity of 5 000 centipoise. Lard has a viscosity of 100 000 centipoise.

See also

Look up poise in Wiktionary, the free dictionary.

• Viscosity

References

1. ^ "Viscosity of Liquids", in CRC Handbook of Chemistry and Physics, 89th Edition (Internet Version 2009), David R. Lide, ed., CRC Press/Taylor and Francis, Boca Raton, FL.

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Dansk (Danish)
1.
n. - ligevægt, holdning, sikkerhed
v. tr. - balancere med, holde i ligevægt
v. intr. - være i ligevægt, svæve

2.
n. - poise

Nederlands (Dutch)
balanceren, aplomb, in de aanslag, kalmte

Français (French)
1.
n. - sang-froid, assurance, aisance
v. tr. - tenir (une épée, etc), se tenir en équilibre, balancer
v. intr. - être tenu en suspension, se balancer

2.
n. - (Mes, Phys) poise

Deutsch (German)
1.
n. - Selbstsicherheit, Haltung, Selbstvertrauen
v. - ausbalancieren

2.
n. - Einheit fÜr dynamische ViskositÄt

Ελληνική (Greek)
n. - αυτοκυριαρχία, νηφαλιότητα, ψυχραιμία, παρουσιαστικό, κορμοστασιά, ύφος, αυτοπεποίθηση, ισορροπία, ζύγιασμα
v. - εξισορροπώ, αντισταθμίζω, ζυγιάζω/-ομαι, αιωρούμαι, ισορροπώ, βρίσκομαι σε ισορροπία

Italiano (Italian)
bilanciare, equilibrio, portamento

Português (Portuguese)
n. - estabilidade (f), equilíbrio (m), pausa (f)
v. - estabilizar, equilibrar, suspender

Русский (Russian)
уравновешивать, балансировать, равновесие, уравновешенность, осанка, хорошо держаться

Español (Spanish)
1.
n. - aplomo, porte, elegancia
v. tr. - balancear, equilibrar, suspender
v. intr. - cernerse, posarse, estar suspendido

2.
n. - unidad de viscosidad dinámica

Svenska (Swedish)
n. - jämvikt, ovisshet, sätt att föra sig
v. - balansera, hålla i jämvikt

中文（简体）(Chinese (Simplified))
1. 使平衡, 把...拿着不动, 使平稳, 使...悬着不动, 平衡, 作好准备, 悬着, 犹豫不决, 镇定, 镇静, 姿势, 姿态, 自信, 平稳

2. 镇定, 镇静, 姿势, 姿态, 自信, 平衡, 平稳

中文（繁體）(Chinese (Traditional))
1.
v. tr. - 使平衡, 把...拿著不動, 使平穩, 使...懸著不動
v. intr. - 平衡, 作好準備, 懸著, 猶豫不決
n. - 鎮定, 鎮靜, 姿勢, 姿態, 自信, 平衡, 平穩

2.
n. - 鎮定, 鎮靜, 姿勢, 姿態, 自信, 平衡, 平穩

한국어 (Korean)
1.
n. - 평형, 미결상태, 공중을 매닮
v. tr. - 균형 잡히게 하다, (몸을) 어떤 자세를 유지하다
v. intr. - 균형이 잡히다, (새 따위가) 공중에서 맴돌다

2.
n. - 푸아즈(점도의 단위)

日本語 (Japanese)
n. - つり合い, 落ち着き, 身のこなし, 態度, 平衡
v. - …のつり合いをとる, 保つ, 宙に浮かせる

العربيه (Arabic)
‏(الاسم) توازن, اتزان (فعل) يتزن, يتوازن‏

עברית (Hebrew)
n. - ‮יציבות, איזון, שיקול-דעת, ביטחון עצמי, זקיפות הגוף, זקיפות הראש‬
v. tr. - ‮איזן, ייצב, תלה‬
v. intr. - ‮הניח בצורה מסויימת, החזיק באופן מסויים‬
n. - ‮יחידת צמיגות דינמית‬

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