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1. ### Bar (unit) - Wikipedia

en.wikipedia.org › wiki › Bar_(unit)

The bar is a metric unit of pressure, but not part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa (100 kPa), or slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar).

2. ### Unit of measurement - Wikipedia

en.wikipedia.org › wiki › Unit_of_measurement

A distinction should be made between units and standards. A unit is fixed by its definition, and is independent of physical conditions such as temperature. By contrast, a standard is a physical realization of a unit, and realizes that unit only under certain physical conditions. For example, the metre is a unit, while a metal bar is a standard.

3. ### Bar (unité) — Wikipédia

fr.wikipedia.org › wiki › Bar_(unité)

Le bar, symbole bar, est une unité de pression exactement égale à 100 000 pascals .Le bar présente l'intérêt d'être voisin de l'atmosphère, symbole atm, unité de mesure basée sur la pression atmosphérique moyenne à la surface de la mer (1 atm = 101 325 Pa).

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