Pascal Unit
The pascal (symbol: Pa) is the unit IF of stress and pressure. It is named after the scientist Blaise Pascal. The plural is pascals. Under the rules of the International System, the name of this unit begins with a tiny (Easter), but as he comes from a proper name, the symbol begins with an uppercase (Pa). The equivalents are: 1013 hPa = 1.013 bar 760 mmHg ( millimeters of mercury or mm Hg ).
A push of a pascal is a uniform stress acting on a flat surface of 1 square meter , perpendicular to the surface exerts a total force of 1 newton.
This unity is expressed in base units as N / m 2 = k g / (m * s 2).
The pascal is a relatively small compared to usual values, often used in multiples:
- the hectopascals (hPa): 1 hPa = 100 Pa = 100 N / m 2
- kilopascals (kPa): 1 kPa = 10 3 Pa = 1000 N / m 2
- the megapascals (MPa): 1 MPa = 10 6 Pa = 1 N / mm 2
- the gigapascal (GPa): 1 GPa = 10 9 Pa = 1000 N / mm 2
Conversion to units outside the SI:
- 1 Pa 7.500 615.10 -3 mm Hg ( millimeters of mercury or torr )
- 1 Pa 9.869 233.10 -6 atm ( atmosphere standard)
- 1 Pa = 10 -5bar
- 1 hPa = 10 -3bar = 1 mbar or millibar
- 1 Pa 1.42 10 -4PSI
See also
Related articles
| SI unit | pascal |
| Non-SI Units | normal atmosphere atmospheric technique Bar microbar mmHg mmH20 piezo psi Torr |
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