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The pascal (symbol: Pa) is the unit of pressure in the International System of Units (SI). It is also used to quantify internal pressure, stress, Young's modulus, and ultimate tensile strength. The unit, named after Blaise Pascal, is an SI coherent derived unit defined as one newton per square metre (N/m 2 ). [1]
Apr 25, 2024 · Pascal is the SI Unit of pressure, representing one newton of force applied per square meter of surface area. It’s named after the French mathematician and physicist Blaise Pascal and is widely used in scientific and engineering contexts to measure pressure in fluid systems, material testing, and atmospheric studies.
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Specifically, a pascal measures the pressure applied by 1 N of force applied on an area of 1 m 2 at a right angle. SI accepted it as the standard unit of pressure in 1971 and named it after Blaise Pascal.
The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m 2, or kg·m −1 ·s −2). This name for the unit was added in 1971; before that, pressure in SI was expressed in newtons per square metre. Other units of pressure, such as pounds per square inch (lbf/in 2) and bar, are also in common use.
A pascal is a pressure of one newton per square metre, or, in SI base units, one kilogram per metre per second squared. This unit is inconveniently small for many purposes, and the kilopascal (kPa) of 1,000 newtons per square metre is more commonly used.
- The Editors of Encyclopaedia Britannica
For example, the SI unit of force is the newton (N), the SI unit of pressure is the pascal (Pa) – and the pascal can be defined as one newton per square metre (N/m 2). [6] Prefixes [ edit ]
Oct 4, 2022 · Course. 537 views. Pascal Units of Pressure. Blaise Pascal is well known for his work on atmospheric pressure. In 1648, Pascal proved that the level of a simple mercury barometer would drop...
