Pounds per square inch
Pounds per Square Inch (PSI)
Pounds per square inch (PSI) is a unit of pressure or 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.
Pronunciation
Pounds per square inch is pronounced as /paʊndz pər skwɛər ɪntʃ/.
Etymology
The term "pounds per square inch" originates from the English system of units. The "pound" refers to the unit of weight, while "per square inch" refers to the area over which the weight is distributed.
Related Terms
- Pressure: The force applied perpendicular to the surface of an object per unit area over which that force is distributed.
- Pascal (unit): The SI unit of pressure, equal to one newton per square meter.
- Bar (unit): A metric unit of pressure, but not part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa, which is slightly less than the current average atmospheric pressure on Earth at sea level.
- Pound-force: A unit of force that is part of the foot-pound-second system of units, commonly used in the United States.
See Also
External links
- Medical encyclopedia article on Pounds per square inch
- Wikipedia's article - Pounds per square inch
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