Pascal (unitatea)

Pascal (unitatea)
Neurtzen dupresioa, Tentsio mekanikoa, Zizaila modulua, konprimagarritasun-modulua eta Youngen modulua
SI sistemarako konbertsioa1 Pa
Unitate estandarretan0 bar, 0,0001450378911491 psi, 0 atm, 0,0002952998 inHg, 0,004014631 iwc, 0,1019716 mm wg, 0,007500616827042 mmHg, 0,01 mbar, 0,1019716212978 kgf/m², 0,02088545632547 psf, 0,007500616827042 Torr eta 0 kgf/cm²
Honen izena daramaBlaise Pascal
IkurraPa, Па, Pa, Pa, Pa eta Pa

Pascala (sinboloa: Pa[1]) Nazioarteko Unitate Sistemako presio-unitatea da. Definizioz  1 N {\displaystyle {\text{ 1 N}}} -eko indar batek berarekiko normala den 1 m 2 {\displaystyle {\text{1 m}}^{2}} -ko azalera duen gainazalean eragiten duen presioa da. Unitatearen izena Blaise Pascal (1623-1662) matematikari eta fisikari frantziarraren ohorez aukeratu zen[2].

Pa = N m 2 = J m 3 = kg m ⋅ s 2 , {\displaystyle {\text{Pa}}={\frac {\text{N}}{{\text{m}}^{2}}}={\frac {\text{J}}{{\text{m}}^{3}}}={\frac {\text{kg}}{{\text{m}}\cdot {{\text{s}}^{2}}}},}

non N {\displaystyle {\text{N}}} (newton), m {\displaystyle {\text{m}}} (metro), J {\displaystyle {\text{J}}} (joule), kg {\displaystyle {\text{kg}}} (kilogramo), s {\displaystyle {\text{s}}} segundo unitateak diren.

Honako baliokidetzak ditu bestelako presio-unitateekin:

1 Pa = 10 − 5  bar = 10 baria = 9 , 86923 × 10 − 6 atm . {\displaystyle {\text{1 Pa}}=10^{-5}{\text{ bar}}={\text{10 baria}}=9,86923\times 10^{-6}{\text{atm}}.}

Multiploak

Multiploa Izena Sinboloa Multiploa Izena Sinboloa
10 0 = 1 {\displaystyle 10^{0}=1} pascal Pa {\displaystyle {\text{Pa}}}      
10 1 {\displaystyle 10^{1}} dekapascal daPa {\displaystyle {\text{daPa}}} 10 − 1 {\displaystyle 10^{-1}} dezipascal dPa {\displaystyle {\text{dPa}}}
10 2 {\displaystyle 10^{2}} hektopascal hPa {\displaystyle {\text{hPa}}} 10 − 2 {\displaystyle 10^{-2}} zentipascal cPa {\displaystyle {\text{cPa}}}
10 3 {\displaystyle 10^{3}} kilopascal kPa {\displaystyle {\text{kPa}}} 10 − 3 {\displaystyle 10^{-3}} milipascal mPa {\displaystyle {\text{mPa}}}
10 6 {\displaystyle 10^{6}} megapascal MPa {\displaystyle {\text{MPa}}} 10 − 6 {\displaystyle 10^{-6}} mikropascal μ Pa {\displaystyle \mu {\text{Pa}}}
10 9 {\displaystyle 10^{9}} gigapascal GPa {\displaystyle {\text{GPa}}} 10 − 9 {\displaystyle 10^{-9}} nanopascal nPa {\displaystyle {\text{nPa}}}
10 12 {\displaystyle 10^{12}} terapascal TPa {\displaystyle {\text{TPa}}} 10 − 12 {\displaystyle 10^{-12}} pikopascal pPa {\displaystyle {\text{pPa}}}
10 15 {\displaystyle 10^{15}} petapascal PPa {\displaystyle {\text{PPa}}} 10 − 15 {\displaystyle 10^{-15}} femtopascal fPa {\displaystyle {\text{fPa}}}
10 18 {\displaystyle 10^{18}} exapascal EPa {\displaystyle {\text{EPa}}} 10 − 18 {\displaystyle 10^{-18}} attopascal aPa {\displaystyle {\text{aPa}}}
10 21 {\displaystyle 10^{21}} zettapascal ZPa {\displaystyle {\text{ZPa}}} 10 − 21 {\displaystyle 10^{-21}} zeptopascal zPa {\displaystyle {\text{zPa}}}
10 24 {\displaystyle 10^{24}} yottapascal YPa {\displaystyle {\text{YPa}}} 10 − 24 {\displaystyle 10^{-24}} yoktopascal yPa {\displaystyle {\text{yPa}}}

Erreferentziak

  1. ↑ Laburtzapenen hiztegia. Gasteiz: Eusko Jaurlaritzaren Argitalpen Zerbitzu Nagusia, 32 or..
  2. ↑ (Gaztelaniaz) Bennington, James L. (1991). «Pascal» Diccionario enciclopédico del laboratorio clínico. Editorial Médica Panamericana, 1064 or. ISBN 9788479036089..

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