Pound-force per square inch topic
Also known as
- Pound per square inch,
- psi
The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lb/in²) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch:
: pascal (Pa) is the SI unit of pressure.
Other abbreviations are used that append a modifier to "psi". However, the US National Institute of Standards and Technology recommends that, to avoid confusion, any modifiers be...
full article at wikipedia
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