A technical atmosphere (symbol: at) is a non-SI unit of pressure equal to one kilogram-force per square centimeter.
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1 at = 98.0665 kPa ≈ 0.96784 standard atmospheres
The symbol "at" clashes with that of the katal (symbol: "kat"), the SI unit of catalytic activity; a kilotechnical atmosphere would have the symbol "kat", indistinguishable from the symbol for the katal. It also clashes with that of the non-SI unit, the attotonne, but that unit would be more likely be rendered as the equivalent SI unit, the picogram.
| pascal | bar | technical atmosphere | standard atmosphere | torr | pound per square inch | |
|---|---|---|---|---|---|---|
| Pa | bar | at | atm | Torr | psi | |
| 1 Pa | ≡ 1 N/m2 | 10−5 | 1.0197×10−5 | 9.8692×10−6 | 7.5006×10−3 | 1.450377×10−4 |
| 1 bar | 105 | ≡ 106 dyn/cm2 | 1.0197 | 0.98692 | 750.06 | 14.50377 |
| 1 at | 0.980665 ×105 | 0.980665 | ≡ 1 kp/cm2 | 0.9678411 | 735.5592 | 14.22334 |
| 1 atm | 1.01325 ×105 | 1.01325 | 1.0332 | ≡ p0 | ≡ 760 | 14.69595 |
| 1 Torr | 133.3224 | 1.333224×10−3 | 1.359551×10−3 | 1.315789×10−3 | ≈ 1 mmHg | 1.933678×10−2 |
| 1 psi | 6.8948×103 | 6.8948×10−2 | 7.03069×10−2 | 6.8046×10−2 | 51.71493 | ≡ 1 lbF/in2 |
Famous quotes containing the words technical and/or atmosphere:
“In effect, to follow, not to force the public inclination; to give a direction, a form, a technical dress, and a specific sanction, to the general sense of the community, is the true end of legislature.”
—Edmund Burke (1729–1797)
“Two thousand summers have imparted to the monuments of Grecian literature, as to her marbles, only a maturer golden and autumnal tint, for they have carried their own serene and celestial atmosphere into all lands to protect them against the corrosion of time.”
—Henry David Thoreau (1817–1862)