atm
(atmosphere)
(unit of pressure)
An atm (or atmosphere) is a unit of pressure conceived to
represent Earth atmospheric pressure.
It has been standardized as an exact value, a selected long-term
average at sea level at the latitude of Paris, France.
Equivalences:
- 101325 pascals
- 1013.25 millibars
- 1.01325 bar
- ≈14.7 pounds-force per square inch.
Other units of pressure:
- a pascal (Pa), an SI-derived unit consisting of 1 kg·m-1·s-2.
- a bar, 10,000 pascals, convenient for (also) being roughly Earth atmospheric pressure.
- a millibar (mbar, 1/1000 of a bar).
- a megabar (Mbar, a million bars).
(physics,unit,pressure,Earth)
Further reading:
https://en.wikipedia.org/wiki/Atmosphere_(unit)
https://en.wikipedia.org/wiki/Bar_(unit)
https://glossary.ametsoc.org/wiki/Standard_atmosphere
https://glossary.ametsoc.org/wiki/Bar
Referenced by pages:
admittance
bar
metal
metallic hydrogen
surface gravity (g)
Titan
torr
Venus
water vapor planet
Index