Bar (unit)

See also: Bar

The bar (symbol bar ) is a measuring unit of Pression of the fluids. The word bar comes from the old word Greek βάρος / báros which means Pesanteur. It is a unit apart from the international Système (IF) but which of it is derived. It is of the interest to be close to the atmosphere (average atmospheric pressure at sea surface).

A bar is worth 10⁵ pascals ( 0.1 MPa ) or 100 let us kilonewtons per square meter ( 100 kN/m ² = 100 kPa ) thus also 10 N/cm ². More commonly it is admitted that a bar is worth 1 kg per square centimeter.

The bar is used in the field of the Météorologie and the industry of the Gaz where one uses especially his subdivision, the Millibar (symbol mb ) now renamed hectopascal ( hPa ).

Orthographical note: Whereas the word bar agrees in the plural ( the pressure is measured in bars ), the symbol bar is invariable, like are all the symbols.

There exists an old unit equivalent to the bar, the pieze ( 1 pz = 0,01 bar ) and its multiple the bar ( 1 hpz = 1 bar ).

External bonds

Conversion of bar towards other units of pressure

Simple: Bar (links)

Random links:

Satanachia | LouLady | Flow (petrography) | Alice Greczyn | Richard_Strauss