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| + | A '''pounds per square inch''' (or '''psi''') was a [[Measurement|measurement unit]] of [[pressure]], which was equal to the force of 1 [[pound]] applied to an area of 1 [[square inch]]. |
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| − | Normal [[Earth]] atmospheric pressure is 14.7 psi, which means that a column of air one square inch in area rising from the Earth's surface (at sea level) to space weighs 14.7 [[pounds]]. |
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| + | After the {{USS|Constellation|NCC-1017}} was attacked by the [[planet killer]], the {{dis|Atmosphere |unit|atmospheric pressure}} on the ship was measured at '''11 pounds per square inch.''' ({{TOS|The Doomsday Machine}}) |
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| − | :''Commonly used in the [[United_States_of_America|U.S.A.]], but not elsewhere.'' |
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| + | {{Bginfo|For reference, the normal atmospheric pressure on [[Earth]] at sea level is 14.7 psi.}} |
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| + | The [[Class F shuttlecraft]] ''{{dis|Galileo|2267}}'' had '''15 pounds psi''' [sic] of [[fuel]] left when it lifted off from [[Taurus II]], which was just enough to make one [[orbit]]. ({{TOS|The Galileo Seven}}) |
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| + | ==External link== |
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| + | * {{Wikipedia}} |
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| + | [[Category:Measurements]] |
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Latest revision as of 13:42, 3 December 2019
A pounds per square inch (or psi) was a measurement unit of pressure, which was equal to the force of 1 pound applied to an area of 1 square inch.
After the USS Constellation was attacked by the planet killer, the atmospheric pressure on the ship was measured at 11 pounds per square inch. (TOS: "The Doomsday Machine")
For reference, the normal atmospheric pressure on Earth at sea level is 14.7 psi.
The Class F shuttlecraft Galileo had 15 pounds psi [sic] of fuel left when it lifted off from Taurus II, which was just enough to make one orbit. (TOS: "The Galileo Seven")