Definition:Bar (Unit)

This page is about bar in the context of physics. For other uses, see bar.

Definition

The bar is a CGS unit of pressure.

It is defined as being:

The amount of pressure equal to exactly $100 \, 000$ pascals.

Conversion Factors

\(\ds \)

\(\)

\(\ds 1\)

bar

\(\ds \)

\(=\)

\(\ds 1000\)

millibars

\(\ds \)

\(=\)

\(\ds 100 \, 000\)

pascals

\(\ds \)

\(=\)

\(\ds 10^6\)

barye

\(\ds \)

\(\approx\)

\(\ds 14 \cdotp 50377\)

pounds per square inch

\(\ds \)

\(\approx\)

\(\ds 0 \cdotp 9869\)

standard atmosphere

Sources

• 1964: Milton Abramowitz and Irene A. Stegun: Handbook of Mathematical Functions ... (previous) ... (next): $2$. Physical Constants and Conversion Factors: Table $2.4$ Miscellaneous Conversion Factors
• 1969: J.C. Anderson, D.M. Hum, B.G. Neal and J.H. Whitelaw: Data and Formulae for Engineering Students (2nd ed.) ... (previous) ... (next): $2.$ Unit Conversion Factors
• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): bar
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): bar