Standard Atmospheres to Baryes (atm to Ba)
1 standard atmosphere equals 1,013,250 baryes exactly.
How to convert standard atmospheres to baryes
To convert standard atmospheres to baryes, multiply the number of standard atmospheres by 1,013,250. This factor is exact. To go the other way, multiply baryes by 9.869232667×10⁻⁷ (rounded).
baryes = standard atmospheres × 1,013,250
Example: 10 standard atmospheres = 10,132,500 baryes.
About these units
Standard Atmosphere (atm)
Exactly 101,325 pascals, the average pressure of the atmosphere at sea level.
A column of mercury about 76 cm tall was Torricelli's measure of the air, and the standard atmosphere began as exactly that: the pressure of 760 mm of mercury at 0 degrees Celsius under standard gravity. It was used as a reference for physical and chemical properties, and the Celsius scale set 100 degrees as the boiling point of water at that pressure.
In 1954 the 10th CGPM confirmed the standard atmosphere as exactly 1,013,250 dynes per square centimeter, which is 101,325 pascals, a definition that no longer depends on the properties of any substance.
In practice one atmosphere is about 1.01325 bar, 760 mmHg, 14.696 psi or 29.92 inHg, and roughly the pressure of 10.33 meters of water. Chemistry splits on it: until 1982 standard temperature and pressure used 1 atm, but that year IUPAC recommended a standard pressure of exactly 100 kPa instead.
1 standard atmosphere = 101,325 pascals (exactly).
Sources: Wikipedia: Standard atmosphere (unit); Wikipedia: Atmospheric pressure; Wikipedia: Evangelista Torricelli
Barye (Ba)
Exactly 0.1 pascal, the CGS unit of pressure (one dyne per square centimeter).
Tiny by everyday standards, the barye is the pressure unit of the centimeter-gram-second system. It is one dyne of force spread over one square centimeter, which works out to one gram per centimeter per second squared, or exactly 0.1 pascal. The same quantity has also been called a microbar, and older texts used other spellings and variants such as bary, barad and barrie.
Because of those names the barye is easy to confuse with the bar. In older usage the plain word bar sometimes meant one dyne per square centimeter, particularly in acoustics, a usage now regarded as incorrect. The modern bar is a million baryes, or 100,000 pascals. The barye fits the family of CGS units laid out after the 1873 British Association committee recommended the centimeter, gram and second, and it sits beside the dyne and the erg. It now survives mainly in older physics and acoustics literature. NIST lists the same value as dyne per square centimeter.
1 barye = 0.1 pascals (exactly).
Sources: Wikipedia: Barye; Wikipedia: Centimetre-gram-second system of units; NIST SP 811, Appendix B.8 conversion factors
Related conversions
- Baryes to standard atmospheres (reverse)
- Standard atmospheres to pascals
- Standard atmospheres to kilopascals
- Standard atmospheres to bars
- Standard atmospheres to PSI
- Standard atmospheres to hectopascals
- Standard atmospheres to megapascals
- Standard atmospheres to millibars
- Standard atmospheres to torr
- Standard atmospheres to millimeters of mercury
- Standard atmospheres to inches of mercury
- Standard atmospheres to gigapascals
- Standard atmospheres to kilopounds per square inch
- Pascals to baryes
- Kilopascals to baryes
- Bars to baryes
- PSI to baryes
See all pressure units.