name | pascal |
---|---|
standard | SI derived unit |
quantity | Pressure / Stress |
symbol | Pa |
namedafter | Blaise Pascal |
extralabel | In SI base units: |
extradata | 1 Pa 1 kg/(m·s2) }} |
In 1985 the IUPAC recommended that the standard for atmospheric pressure should be harmonized to 100,000 Pa = 1 bar = 750 Torr. The same definition is used in the compressor and the pneumatic tool industries (ISO 2787).
The Unicode computer character set has dedicated symbols () for Pa and () for kPa, but these exist merely for backward-compatibility with some older ideographic character-sets and are therefore deprecated.
Tectonophysicists use the gigapascal (GPa) in measuring or calculating tectonic forces within the earth.
In Solid Mechanics, megapascals (MPa = N/mm2) or gigapascals (GPa = kN/mm2) are commonly used to measure stiffness of materials (see Young's modulus).
Other, older units of measure occasionally used for pressure are millimeters of mercury (Torr) and millimetres of water (1 mm H2O = 9.80665 Pa).
:1 hectopascal (hPa) ≡ 100 Pa ≡ 1 mbar. :1 kilopascal (kPa) ≡ 1000 Pa ≡ 10 hPa ≡ 10 mbar.
In the cgs system, the unit of pressure is the barye (symbol ba), which is equal to one decipascal. The older kg(force)/cm2 corresponds to 98.0665 kPa, but is often rounded to 100 kPa in practice.
In the former mts system, the unit of pressure is the pièze (symbol pz), which is equal to one kilopascal.
Vehicle owners' guides now specify tire inflation in kilopascals.
Airtightness testing of buildings is measured at 50 Pa or 0.2 inches of water.
Category:SI derived units Category:Units of pressure Category:Blaise Pascal
af:Pascal (eenheid) als:Pascal (Einheit) ar:باسكال (وحدة) ast:Pascal (unidá) bn:প্যাস্কেল be:Паскаль, адзінка вымярэння be-x-old:Паскаль (адзінка вымярэньня) bo:ཕ་སི་ཁལ། bs:Paskal (jedinica) br:Pascal bg:Паскал (единица) ca:Pascal (unitat) cs:Pascal (jednotka) cy:Pascal da:Pascal (enhed) de:Pascal (Einheit) et:Paskal el:Πασκάλ (μονάδα μέτρησης) es:Pascal (unidad) eo:Paskalo eu:Pascal (unitatea) fa:پاسکال fr:Pascal (unité) gl:Pascal (unidade) ko:파스칼 (단위) hi:पास्कल (इकाई) hr:Paskal id:Pascal (satuan) is:Paskal it:Pascal (unità di misura) he:פסקל (מידה) ka:პასკალი kk:Паскаль ht:Paskal lv:Paskāls lt:Paskalis (matavimo vienetas) li:Pascal (Eenheid) hu:Pascal (mértékegység) mk:Паскал (единица) nl:Pascal (eenheid) ja:パスカル no:Pascal (enhet) nn:Pascal oc:Pascal (unitat) km:ប៉ាស្កាល់ nds:Pascal (Eenheit) pl:Paskal pt:Pascal (unidade) ro:Pascal (unitate) ru:Паскаль (единица измерения) si:පැස්කලය simple:Pascal (unit) sk:Pascal sl:Paskal sr:Паскал (јединица) sh:Paskal fi:Pascal (yksikkö) sv:Pascal (måttenhet) ta:பாசுக்கல் (அலகு) th:ปาสกาล (หน่วยวัด) tr:Pascal (birim) uk:Паскаль (одиниця СІ) vi:Pascal (đơn vị) zh:帕斯卡This text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
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