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Pascal (unit)

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2131: 56: 864:, meteorologists generally measure pressures in hectopascals (hPa) unit, equal to 100 pascals or 1 millibar. Exceptions include Canada, which uses kilopascals (kPa). In many other fields of science, prefixes that are a power of 1000 are preferred, which excludes the hectopascal from use. 837:
Hence normal blood pressure in SI units is less than 16.0 kPa SBP and less than 10.7 kPa DBP. These values are similar to the pressure of water column of average human height; so pressure has to be measured on arm roughly at the level of the heart.
514: 1329: 393: 570: 833:). The normal adult blood pressure is less than 120 mmHg systolic BP (SBP) and less than 80 mmHg diastolic BP (DBP). Convert mmHg to SI units as follows: 315: 562: 1742: 561: Pa (101.325 kPa). This value is often used as a reference pressure and specified as such in some national and international standards, such as the 1409: 1229: 2106: 812:(SPL) on a logarithmic scale of the sound pressure relative to some reference pressure. For sound in air, a pressure of 20 ÎĽPa is considered to be at the 1426: 368: 1545: 1422: 1501: 1252: 689:
of materials. In engineering the megapascal (MPa) is the preferred unit for these uses, because the pascal represents a very small quantity.
1761: 1397: 1691: 1365: 343:, thus a standard atmosphere (atm) or typical sea-level air pressure is about 1013 hPa. Reports in the United States typically use 621:
The pascal (Pa) or kilopascal (kPa) as a unit of pressure measurement is widely used throughout the world and has largely replaced the
1822: 1644: 1246: 340: 2012: 785:, the joule per cubic metre. This applies not only to the thermodynamics of pressurised gases, but also to the energy density of 2116: 1200: 79: 1831: 876: 861: 275: 542:
One pascal is the pressure exerted by a force of magnitude one newton perpendicularly upon an area of one square metre.
626: 860:(100,000 Pa), which is close to the average air pressure on Earth, and the millibar. Since the introduction of 609:
block, but these exist only for backward-compatibility with some older ideographic character-sets and are therefore
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system. Common multiple units of the pascal are the hectopascal (1 hPa = 100 Pa), which is equal to one
2155: 786: 291: 2070: 573:(IUPAC) recommends the use of 100 kPa as a standard pressure when reporting the properties of substances. 299: 2111: 651: 31: 2165: 1815: 622: 65: 826: 194: 1552: 1430: 1276: 1210: 1179: 813: 794: 686: 509:{\displaystyle {\rm {1~Pa=1~{\frac {N}{m^{2}}}=1~{\frac {kg}{m{\cdot }s^{2}}}=1~{\frac {J}{m^{3}}}}}} 336: 867:
Many countries also use millibars. In practically all other fields, the kilopascal is used instead.
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use the gigapascal (GPa) in measuring or calculating tectonic stresses and pressures within the
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or millibars (hectopascals). In Canada these reports are given in kilopascals.
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Guide for the Use of the International System of Units (SI) (rev. ): The ...
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for humans and is a common reference pressure, so that its SPL is zero.
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was adopted for the SI unit newton per square metre (N/m) by the 14th
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is the subjective experience of sound pressure and is measured as a
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Minutes of the 14. General Conference on Weights and Measures
1302:"National Weather Service glossary page on inches of mercury" 875:
Decimal multiples and submultiples are formed using standard
1800: 84: 625:(psi) unit, except in some countries that still use the 396: 1762:"MontrĂ©al, QC – 7 Day Forecast – Environment Canada" 2089: 2011: 1886: 1838: 1743:"CTV News, weather; current conditions in Montreal" 1496:. Mountain View, CA: The Unicode Consortium. 2015. 852:The units of atmospheric pressure commonly used in 569:(aerospace) and ISO 5024 (petroleum). In contrast, 243: 226: 200: 171: 144: 122: 112: 104: 90: 78: 73: 48: 693:Approximate Young's modulus for common substances 508: 571:International Union of Pure and Applied Chemistry 781:The pascal is also equivalent to the SI unit of 37:"Hectopascal" redirects here. For the song, see 565:'s ISO 2787 (pneumatic tools and compressors), 1423:"Resolution 4 of the 10th meeting of the CGPM" 1182:which gives the usage of the hbar and the mbar 650:measures tissue stiffness non-invasively with 563:International Organization for Standardization 339:in hectopascals per the recommendation of the 30:"Pascals" redirects here. For other uses, see 1816: 8: 1671:"Japan Meteorological Agency – Weather Maps" 1410:International Bureau of Weights and Measures 1230:International Bureau of Weights and Measures 2107:Historical definitions of the SI base units 825:In medicine, blood pressure is measured in 1823: 1809: 1801: 369:General Conference on Weights and Measures 45: 496: 487: 469: 460: 446: 429: 420: 398: 397: 395: 1427:ConfĂ©rence GĂ©nĂ©rale des Poids et Mesures 1316:"US government atmospheric pressure map" 881: 691: 1345:"Canadian Weather - Environment Canada" 1277:"Definition of the standard atmosphere" 1221: 1624:"Comment convertir la pression? – IRM" 1235:The International System of Units (SI) 1343:Canada, Environment (16 April 2013). 7: 1493:The Unicode Standard, Version 8.0.0 552:atmosphere or a standard atmosphere 310:(N/m). It is also equivalent to 10 550:The unit of measurement called an 493: 489: 466: 457: 452: 449: 426: 422: 408: 405: 379:The pascal can be expressed using 276:International System of Units (SI) 25: 341:World Meteorological Organization 126: 68:(red scale) and kPa (black scale) 2130: 2129: 1258:from the original on 4 June 2021 54: 633:, including the United States. 331:is defined as 101,325 Pa. 325:The unit of measurement called 2117:System of units of measurement 1551:. ResNet. 2010. Archived from 1201:Orders of magnitude (pressure) 842:Hectopascal and millibar units 800:The pascal is used to measure 335:observations typically report 278:. It is also used to quantify 1: 1241:(8th ed.), p. 118, 820:The airtightness of buildings 1720:United Kingdom, Met Office. 1603:"KNMI – Weer – Waarnemingen" 822:is measured at 50 Pa. 774: 764: 753: 743: 733: 723: 712: 627:imperial measurement system 27:SI derived unit of pressure 2182: 1722:"Key to symbols and terms" 1582:American Heart Association 1578:"BP Guideline | Target:BP" 871:Multiples and submultiples 845: 677:, the pascal measures the 666:of tissue in kilopascals. 656:magnetic resonance imaging 579:has dedicated code-points 383:, or alternatively solely 36: 29: 2125: 1786:Ambler Thompson (Editor) 889: 886: 829:(mmHg, very close to one 658:, and often displays the 328:standard atmosphere (atm) 292:ultimate tensile strength 140: 53: 2071:minute and second of arc 355:The unit is named after 300:SI coherent derived unit 294:. The unit, named after 2112:2019 revision of the SI 1394:Table 3 (Section 2.2.2) 32:Pascal (disambiguation) 1451:IUPAC.org, Gold Book, 1429:. 1954. Archived from 827:millimeters of mercury 623:pounds per square inch 510: 1760:Canada, Environment. 1330:"The Weather Channel" 835:1 mmHg = 0.13332 kPa. 511: 2013:Other accepted units 1400:18 June 2007 at the 1368:30 June 2007 at the 1211:Pressure measurement 1180:Atmospheric pressure 814:threshold of hearing 810:sound pressure level 687:compressive strength 394: 337:atmospheric pressure 2097:Conversion of units 1768:on 30 November 2017 1651:on 10 February 2008 1467:"CJK Compatibility" 1186:Centimetre of water 883: 694: 631:US customary system 135:... is equal to ... 74:General information 1890:with special names 978:bar (non-SI unit) 882: 856:were formerly the 692: 506: 254:    245:    237:    228:    211:    202:    182:    176:US customary units 173:    155:    146:    39:Hectopascal (song) 2161:Units of pressure 2143: 2142: 2021:astronomical unit 1503:978-1-936213-10-8 1454:Standard Pressure 1171: 1170: 779: 778: 671:materials science 607:CJK Compatibility 502: 486: 476: 445: 435: 419: 404: 345:inches of mercury 280:internal pressure 270:) is the unit of 260: 259: 123:Conversions 16:(Redirected from 2173: 2156:SI derived units 2133: 2132: 1825: 1818: 1811: 1802: 1796: 1784: 1778: 1777: 1775: 1773: 1764:. Archived from 1757: 1751: 1750: 1745:. Archived from 1739: 1733: 1732: 1730: 1728: 1717: 1711: 1706: 1700: 1699: 1694:. Archived from 1688: 1682: 1681: 1679: 1677: 1667: 1661: 1660: 1658: 1656: 1647:. Archived from 1641: 1635: 1634: 1632: 1630: 1620: 1614: 1613: 1611: 1609: 1599: 1593: 1592: 1590: 1588: 1574: 1568: 1567: 1565: 1563: 1557: 1550: 1542: 1536: 1535: 1533: 1531: 1521: 1515: 1514: 1512: 1510: 1488: 1482: 1481: 1479: 1477: 1471: 1463: 1457: 1449: 1443: 1442: 1440: 1438: 1433:on 30 March 2021 1419: 1413: 1391: 1385: 1379: 1373: 1359: 1353: 1352: 1340: 1334: 1333: 1326: 1320: 1319: 1312: 1306: 1305: 1298: 1292: 1291: 1289: 1287: 1273: 1267: 1266: 1265: 1263: 1257: 1240: 1226: 884: 836: 701:Young's modulus 695: 683:tensile strength 604: 601: 598: 596: 591: 588: 585: 583: 560: 559: 515: 513: 512: 507: 505: 504: 503: 501: 500: 488: 484: 477: 475: 474: 473: 464: 455: 447: 443: 436: 434: 433: 421: 417: 402: 381:SI derived units 255: 246: 238: 229: 221: 218: 217: 212: 203: 192: 189: 188: 183: 174: 156: 147: 58: 46: 21: 2181: 2180: 2176: 2175: 2174: 2172: 2171: 2170: 2146: 2145: 2144: 2139: 2121: 2102:Metric prefixes 2085: 2007: 1889: 1882: 1834: 1829: 1799: 1785: 1781: 1771: 1769: 1759: 1758: 1754: 1749:on 4 June 2011. 1741: 1740: 1736: 1726: 1724: 1719: 1718: 1714: 1707: 1703: 1690: 1689: 1685: 1675: 1673: 1669: 1668: 1664: 1654: 1652: 1643: 1642: 1638: 1628: 1626: 1622: 1621: 1617: 1607: 1605: 1601: 1600: 1596: 1586: 1584: 1576: 1575: 1571: 1561: 1559: 1558:on 26 July 2011 1555: 1548: 1544: 1543: 1539: 1529: 1527: 1523: 1522: 1518: 1508: 1506: 1504: 1490: 1489: 1485: 1475: 1473: 1469: 1465: 1464: 1460: 1450: 1446: 1436: 1434: 1421: 1420: 1416: 1402:Wayback Machine 1392: 1388: 1380: 1376: 1370:Wayback Machine 1360: 1356: 1342: 1341: 1337: 1328: 1327: 1323: 1314: 1313: 1309: 1300: 1299: 1295: 1285: 1283: 1275: 1274: 1270: 1261: 1259: 1255: 1249: 1238: 1228: 1227: 1223: 1219: 1176: 873: 850: 844: 834: 702: 660:Young's modulus 619: 602: 599: 594: 593: 589: 586: 581: 580: 557: 555: 548: 535:, and J is the 519:where N is the 492: 465: 456: 448: 425: 392: 391: 377: 353: 314:(10 Ba) in the 302:defined as one 288:Young's modulus 253: 244: 236: 227: 219: 215: 213: 210: 201: 190: 186: 184: 181: 172: 154: 145: 69: 42: 35: 28: 23: 22: 15: 12: 11: 5: 2179: 2177: 2169: 2168: 2163: 2158: 2148: 2147: 2141: 2140: 2138: 2137: 2126: 2123: 2122: 2120: 2119: 2114: 2109: 2104: 2099: 2093: 2091: 2087: 2086: 2084: 2083: 2078: 2073: 2068: 2063: 2058: 2053: 2048: 2043: 2038: 2033: 2028: 2023: 2017: 2015: 2009: 2008: 2006: 2005: 2000: 1995: 1990: 1985: 1980: 1975: 1970: 1965: 1960: 1955: 1950: 1945: 1940: 1935: 1930: 1925: 1920: 1915: 1910: 1908:degree Celsius 1905: 1900: 1894: 1892: 1888:Derived units 1884: 1883: 1881: 1880: 1875: 1870: 1865: 1860: 1855: 1850: 1844: 1842: 1836: 1835: 1830: 1828: 1827: 1820: 1813: 1805: 1798: 1797: 1779: 1752: 1734: 1712: 1701: 1698:on 6 May 2006. 1683: 1662: 1636: 1615: 1594: 1569: 1537: 1516: 1502: 1483: 1458: 1444: 1414: 1386: 1384:, 1971, p. 78. 1374: 1354: 1335: 1321: 1307: 1293: 1268: 1247: 1220: 1218: 1215: 1214: 1213: 1208: 1203: 1198: 1193: 1188: 1183: 1175: 1172: 1169: 1168: 1165: 1162: 1159: 1156: 1153: 1149: 1148: 1145: 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124: 120: 119: 114: 110: 109: 106: 102: 101: 92: 88: 87: 82: 76: 75: 71: 70: 62:pressure gauge 59: 51: 50: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 2178: 2167: 2166:Blaise Pascal 2164: 2162: 2159: 2157: 2154: 2153: 2151: 2136: 2128: 2127: 2124: 2118: 2115: 2113: 2110: 2108: 2105: 2103: 2100: 2098: 2095: 2094: 2092: 2088: 2082: 2079: 2077: 2074: 2072: 2069: 2067: 2064: 2062: 2059: 2057: 2054: 2052: 2049: 2047: 2044: 2042: 2041:degree of arc 2039: 2037: 2034: 2032: 2029: 2027: 2024: 2022: 2019: 2018: 2016: 2014: 2010: 2004: 2001: 1999: 1996: 1994: 1991: 1989: 1986: 1984: 1981: 1979: 1976: 1974: 1971: 1969: 1966: 1964: 1961: 1959: 1956: 1954: 1951: 1949: 1946: 1944: 1941: 1939: 1936: 1934: 1931: 1929: 1926: 1924: 1921: 1919: 1916: 1914: 1911: 1909: 1906: 1904: 1901: 1899: 1896: 1895: 1893: 1891: 1885: 1879: 1876: 1874: 1871: 1869: 1866: 1864: 1861: 1859: 1856: 1854: 1851: 1849: 1846: 1845: 1843: 1841: 1837: 1833: 1826: 1821: 1819: 1814: 1812: 1807: 1806: 1803: 1795: 1791: 1790: 1783: 1780: 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Retrieved 1271: 1260:, retrieved 1234: 1224: 1206:Pascal's law 1144:rontopascal 1135:ronnapascal 1124:yoctopascal 1115:yottapascal 1104:zeptopascal 1095:zettapascal 1064:femtopascal 1004:micropascal 967:millipascal 947:centipascal 938:hectopascal 874: 866: 851: 824: 818: 799: 780: 740:Tooth enamel 668: 648:elastography 645: 635: 620: 575: 549: 541: 527:, kg is the 518: 378: 364: 354: 326: 324: 308:square metre 267: 263: 261: 134: 129: 91:Unit of 43: 1655:20 December 1530:16 February 1509:21 February 1476:21 February 1406:SI Brochure 1286:16 February 1262:16 December 1191:Meteorology 1084:attopascal 1055:petapascal 1044:picopascal 1035:terapascal 1024:nanopascal 1015:gigapascal 995:megapascal 958:kilopascal 927:decipascal 918:decapascal 854:meteorology 759:Structural 675:engineering 531:, s is the 523:, m is the 363:. 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Index

Hectopascal
Pascal (disambiguation)
Hectopascal (song)

pressure gauge
psi
Unit system
SI
pressure
stress
Blaise Pascal
SI base units
kg
m
s
US customary units
psi
atmosphere
bar
barye
pressure
International System of Units (SI)
internal pressure
stress
Young's modulus
ultimate tensile strength
Blaise Pascal
SI coherent derived unit
newton
square metre

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