Pascal (unit)
Pascal (unit)
The Pascal (symbol: Pa) is the SI unit of pressure, internal stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer and Catholic theologian Blaise Pascal. It is defined as one newton per square metre.
Pronunciation
In English, Pascal is pronounced as /pæˈskæl/.
Etymology
The unit is named after Blaise Pascal, a prominent French mathematician, physicist, and philosopher of the 17th century. Pascal made significant contributions to the fields of hydrodynamics and hydrostatics, and his work in the field of pressure and vacuum led to his name being given to the unit of pressure.
Definition
One Pascal is defined as one newton of force applied over an area of one square metre. This can be mathematically represented as:
1 Pa = 1 N/m²
Related Terms
- Pressure: The force applied perpendicular to the surface of an object per unit area.
- Newton (unit): The SI unit of force, named after Sir Isaac Newton.
- Metre: The base unit of length in the SI system of units.
- Stress (mechanics): The internal forces that neighboring particles of a material exert on each other.
- Young's modulus: A measure of the stiffness of a solid material.
- Tensile strength: The maximum amount of tensile (pulling) stress that a material can withstand without breaking.
External links
- Medical encyclopedia article on Pascal (unit)
- Wikipedia's article - Pascal (unit)
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