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System of units of measurement

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416: 3067: 36: 682:. The troy ounce is the only unit of the system in current use; it is used for precious metals. Although the troy ounce is larger than its avoirdupois equivalent, the pound is smaller. The obsolete troy pound was divided into 12 ounces, rather than the 16 ounces per pound of the avoirdupois system. The apothecaries' system was traditionally used in 318:, is used to select a small number of base quantities for which a unit is defined for each, from which all other units may be derived. Secondary units (multiples and submultiples) are derived from these base and derived units by multiplying by powers of ten. For example, where the unit of length is the 220:
The preference for a more universal and consistent system only gradually spread with the growth of international trade and science. Changing a measurement system has costs in the near term, which often results in resistance to such a change. The substantial benefit of conversion to a more rational
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In the United States metric units are virtually always used in science, frequently in the military, and partially in industry. U.S. customary units are primarily used in U.S. households. At retail stores, the litre (spelled 'liter' in the U.S.) is a commonly used unit for volume, especially on
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were defined locally: the different units might be defined independently according to the length of a king's thumb or the size of his foot, the length of stride, the length of arm, or maybe the weight of water in a keg of specific size, perhaps itself defined in
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pitches are not of a fixed size, but instead can vary within defined limits (100–130 yd or 91.4–118.9 m long, and 50–100 yd or 45.7–91.4 m wide, giving an area of 5,000 to 13,000 sq yd or 4,181 to 10,870 m). However the
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of units have evolved since the adoption of the first well-defined system in France in 1795. During this evolution the use of these systems has spread throughout the world, first to non-English-speaking countries, and then to English speaking countries.
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public media for the sizes of large buildings or parks. It is used both as a unit of length (100 yd or 91.4 m, the length of the playing field excluding goal areas) and as a unit of area (57,600 sq ft or 5,350 m), about 1.32
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and internationally consistent system of measurement has been recognized and promoted by scientists, engineers, businesses and politicians, and has resulted in most of the world adopting a commonly agreed metric system.
359:, with partial transition to the metric system. U.S. units are used in limited contexts in Canada due to the large volume of trade with the U.S. There is also considerable use of imperial weights and measures, despite 705:
in such a manner that selected physical constants take on the numerical value of one when expressed in terms of those units. Natural units are so named because their definition relies on only properties of
267:, are derived from the base quantities: for example, speed is distance per unit time. Historically a wide range of units was used for the same type of quantity. In different contexts length was measured in 569:, but in all these countries they have been largely supplanted by the metric system. They are still used for some applications in the United Kingdom but have been mostly replaced by the metric system in 2071: 593: 1004:
is the international standard describing three letter codes (also known as the currency code) to define the names of currencies established by the International Organization for Standardization (ISO).
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have been made (mainly in the late 1960s and early 1970s), the customary units have a strong hold due to the vast industrial infrastructure and commercial development.
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A number of other jurisdictions have laws mandating or permitting other systems of measurement in some or all contexts, such as the United Kingdom – whose
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for mass. The other units of length and mass, and all units of area, volume, and derived units such as density were derived from these two base units.
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and rules relating them to each other. Systems of measurement have historically been important, regulated and defined for the purposes of science and
2658: 2375: 2195: 1576: 1114: 686:, but has now been replaced by the metric system; it shared the same pound and ounce as the troy system but with different further subdivisions. 616:; however, the US and, formerly, India retained older definitions for surveying purposes. This gave rise to the US survey foot for instance. The 1399: 613: 2694: 2689: 2643: 2294: 2284: 2185: 1561: 1394: 100: 2699: 2269: 2207: 1864: 1198: 819: 72: 1844: 2633: 2420: 1551: 1434: 1148: 1121: 314:
In the metric system and other recent systems, underlying relationships between quantities, as expressed by formulae of physics such as
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of 2240 lb. The stone is not used in the US and the hundredweights and tons are short: 100 lb and 2000 lb respectively.
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Measures and Weights in the Islamic World. An English Translation of Professor Walther Hinz's Handbook "Islamische MaĂźe und Gewichte"
2557: 2076: 1798: 1770: 1644: 1483: 434:. This relationship is compatible with the decimal system of numbers and it contributes greatly to the convenience of metric units. 119: 2948: 2527: 2491: 2400: 2138: 1453: 1203: 1081: 1828: 901:, and its multiples the kiloton, the megaton, and the gigaton. Often used in stating the power of very energetic events such as 86: 2613: 2598: 2552: 2430: 2405: 2390: 2350: 2274: 1857: 1537: 1522: 1374: 1233: 1208: 1188: 1163: 868:
field must be exactly 105 by 68 m (114.83 by 74.37 yd) giving an area of 7,140 m (0.714 ha) or 8,539 
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A Reference to Spanish and French land measures (and their English equivalents with conversion tables) used in North America
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Larger areas are also expressed as a multiple of the areas of states and countries understood to be familiar to the reader.
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have only length, mass, and time as base quantities, with no separate electromagnetic dimension. Other quantities, such as
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and not on any human construct. Varying systems of natural units are possible, depending on the choice of constants used.
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Throughout history, many official systems of measurement have been used. While no longer in official use, some of these
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or SI). It is a system in which all units can be expressed in terms of seven units. The units that serve as the
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and 20 imp fl oz per imperial pint, the imperial pint is about 20% larger. The same is true of
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Multiples and submultiples of metric units are related by powers of ten and their names are formed with
1839: 3096: 1649: 1619: 981: 721: 698: 181: 145: 232:, and this has spread around the world, replacing most customary units of measure. In most systems, 3032: 2653: 2173: 2104: 1604: 1571: 205:. The unifying characteristic is that there was some definition based on some standard. Eventually 415: 2168: 1944: 1634: 702: 544: 340: 419:
A baby bottle that measures in three measurement systems—metric, imperial (UK), and US customary
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applications. US customary units, however, are still the main system of measurement in the
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system served as the general system of mass and weight. In addition to this there are the
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bottles of beverages, and milligrams, rather than grains, are used for medications.
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While imperial and US customary systems are closely related, there are a number of
558: 496: 288: 322:; a distance of 1 metre is 1,000 millimetres, or 0.001 kilometres. 742:
is included in the list of defining constants. It is based on only properties of
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Financial Accounting Standards Research Initiative: The Unit of Account Issue
839:(91.4 m) long by 160 feet (48.8 m) wide. This is often used by the 217:
gave way to "customary units" to meet the needs of merchants and scientists.
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A number of variations on the metric system have been in use. These include
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Later science developments showed that an electromagnetic quantity such as
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Where these systems most notably differ is in their units of volume. A US
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or electric current could be added to extend the set of base quantities.
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Collection of units of measurement and rules relating them to each other
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in economics and unit of measure in accounting. This is normally a
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as a unit of energy. (Its yield was roughly 13 kilotons, or 60 TJ.)
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The current international standard for the metric system is the
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Metrication is complete or nearly complete in most countries.
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has been defined as 1000 thermochemical calories (1,000 
624:(lb). The imperial system uses a stone of 14 lb, a long 1811:
CLDR – Unicode localization of currency, date, time, numbers
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are occasionally used in day-to-day life, for instance in
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In the early metric system there were two base units, the
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units of mass and weight differ for units larger than a
1702:"Units and Dimension Standard - 2021 - SOLIDWORKS Help" 612:, etc.) have been identical since the adoption of the 370:, for instance, only allows distance signs displaying 3025: 2947: 2822: 2774: 2708: 2682: 2626: 2566: 2520: 2439: 2328: 2131: 2097: 2090: 2059: 2028: 2021: 1974: 1932: 1894: 1887: 60:. Unsourced material may be challenged and removed. 770:, particularly for describing the properties of 561:. Imperial units were mostly used in the former 822:also found in books, newspapers etc., include: 1671:. Her Majesty's Stationery Office (HMSO). 2002 752:is a system of geometrized units in which the 482:, millimetre–gram–second (mmgs) is also used. 385:units are still in international use, such as 2752: 1865: 537:Imperial and US customary measurement systems 157: 8: 738:is system of geometrized units in which the 490: 3043:Historical definitions of the SI base units 2759: 2745: 2737: 2094: 2025: 1891: 1872: 1858: 1850: 794:in this system is the total energy of the 980:or a fraction thereof; for instance, the 120:Learn how and when to remove this message 940:. Its energy yield is often used in the 478:(mks). In some engineering fields, like 1660: 1115:History of measurement systems in India 855:British media also frequently uses the 670:. Troy weight was customarily used for 964:A unit of measurement that applies to 746:rather than of any object or particle. 614:International Yard and Pound Agreement 1845:The Unified Code for Units of Measure 1826:Measures from Antiquity and the Bible 7: 1816:A Dictionary of Units of Measurement 1791:Smoot's Ear: The Measure of Humanity 474:(mts) once used in the USSR and the 58:adding citations to reliable sources 1725:Henry, Lesley-Anne (23 June 2007). 182:Units of measurement § History 1902:International System of Units (SI) 882:about the size of a football pitch 859:for equivalent purposes, although 25: 1690:HK Weights and Measures Ordinance 1645:Unified Code for Units of Measure 1008:Historical systems of measurement 374:(miles or yards) – or Hong Kong. 3066: 3065: 596:. Units of length and area (the 69:"System of units of measurement" 34: 835:, which has a playing area 100 732:are among the constants chosen. 531:Imperial and US customary units 363:Canadian conversion to metric. 152:. Instances in use include the 45:needs additional citations for 3053:System of units of measurement 938:atom bomb dropped on Hiroshima 820:Non-standard measurement units 766:are a system of units used in 713:Some examples are as follows: 701:defined in terms of universal 492:Système international d'unitĂ©s 468:centimetre–gram–second systems 393:in aviation and shipping, and 170:United States customary system 134:system of units of measurement 1: 1912:US customary units (USCS/USC) 1625:Medieval weights and measures 487:International System of Units 470:(cgs) useful in science, the 411:International System of Units 154:International System of Units 1835: (archived May 10, 2008) 1610:History of the metric system 806:. The unit of length is the 476:metre–kilogram–second system 353:Burmese units of measurement 1838:Reasonover's Land Measures 585:. While some steps towards 343:remain heavily used in the 3113: 1775:Handbuch der Orientalistik 1640:Pseudoscientific metrology 1112: 1011: 628:of 112 lb and a long 534: 404: 329: 185: 179: 3061: 1965:English Engineering Units 1789:Tavernor, Robert (2007), 880:are aluminium catamarans 639:(fl oz), about 29.6 472:metre–tonne–second system 3007:minute and second of arc 1761:M. Ismail Marcinkowski, 718:Geometrized unit systems 594:differences between them 368:road signage legislation 160:(the modern form of the 3048:2019 revision of the SI 2004:Quantum chromodynamical 1829:Antiquity and the Bible 833:American football field 788:reduced Planck constant 740:reduced Planck constant 397:for aircraft altitude. 316:Newton's laws of motion 166:British imperial system 2117:centimetre–gram–second 1881:Systems of measurement 1014:History of measurement 730:gravitational constant 491: 457:customary measurements 420: 347:and to some degree in 194:systems of measurement 188:History of measurement 2639:Biblical and Talmudic 2105:metre–kilogram–second 1557:Biblical and Talmudic 1153:Biblical and Talmudic 994:of a dollar), or the 866:UEFA Champions League 668:apothecaries' systems 480:computer-aided design 464:gravitational systems 418: 186:Further information: 144:, is a collection of 142:system of measurement 18:System of measurement 2949:Other accepted units 1821:Old units of measure 1656:Notes and references 1650:Weights and measures 1620:Level of measurement 921:of TNT as a unit of 724:. In these systems, 722:relativistic physics 699:units of measurement 567:British Commonwealth 557:derive from earlier 146:units of measurement 54:improve this article 3033:Conversion of units 1706:help.solidworks.com 1605:Conversion of units 441:for length and the 2826:with special names 2111:metre–tonne–second 1907:UK imperial system 1635:Petrograd Standard 815:Non-standard units 703:physical constants 555:US customary units 545:US customary units 421: 341:US customary units 136:, also known as a 3079: 3078: 2957:astronomical unit 2734: 2733: 2622: 2621: 2086: 2085: 2077:Foot–pound–second 2017: 2016: 1994:Heaviside–Lorentz 1733:Belfast Telegraph 1020:customary systems 960:Units of currency 876:). For example, " 780:elementary charge 758:elementary charge 228:gave rise to the 226:French Revolution 130: 129: 122: 104: 16:(Redirected from 3104: 3092:Systems of units 3069: 3068: 2761: 2754: 2747: 2738: 2201:Mesures usuelles 2095: 2026: 1892: 1874: 1867: 1860: 1851: 1778: 1759: 1753: 1748: 1742: 1741: 1736:. Archived from 1722: 1716: 1715: 1713: 1712: 1698: 1692: 1687: 1681: 1680: 1678: 1676: 1665: 993: 992: 988: 784:Coulomb constant 754:Coulomb constant 494: 449:Mesures usuelles 326:Current practice 159: 125: 118: 114: 111: 105: 103: 62: 38: 30: 21: 3112: 3111: 3107: 3106: 3105: 3103: 3102: 3101: 3082: 3081: 3080: 3075: 3057: 3038:Metric prefixes 3021: 2943: 2825: 2818: 2770: 2765: 2735: 2730: 2704: 2678: 2618: 2562: 2516: 2435: 2324: 2127: 2082: 2055: 2013: 1970: 1928: 1883: 1878: 1833:Wayback Machine 1807: 1786: 1781: 1760: 1756: 1749: 1745: 1724: 1723: 1719: 1710: 1708: 1700: 1699: 1695: 1688: 1684: 1674: 1672: 1667: 1666: 1662: 1658: 1630:Megalithic yard 1601: 1596: 1547: 1542: 1493: 1488: 1449: 1444: 1258: 1253: 1117: 1111: 1106: 1032: 1016: 1010: 998:and euro cent. 990: 986: 985: 970:unit of account 962: 894: 828: 817: 802:and called the 692: 672:precious metals 547: 535:Main articles: 533: 413: 405:Main articles: 403: 381:Some other non- 334: 328: 253:electric charge 246:base quantities 190: 184: 178: 138:system of units 126: 115: 109: 106: 63: 61: 51: 39: 28: 23: 22: 15: 12: 11: 5: 3110: 3108: 3100: 3099: 3094: 3084: 3083: 3077: 3076: 3074: 3073: 3062: 3059: 3058: 3056: 3055: 3050: 3045: 3040: 3035: 3029: 3027: 3023: 3022: 3020: 3019: 3014: 3009: 3004: 2999: 2994: 2989: 2984: 2979: 2974: 2969: 2964: 2959: 2953: 2951: 2945: 2944: 2942: 2941: 2936: 2931: 2926: 2921: 2916: 2911: 2906: 2901: 2896: 2891: 2886: 2881: 2876: 2871: 2866: 2861: 2856: 2851: 2846: 2844:degree Celsius 2841: 2836: 2830: 2828: 2824:Derived units 2820: 2819: 2817: 2816: 2811: 2806: 2801: 2796: 2791: 2786: 2780: 2778: 2772: 2771: 2766: 2764: 2763: 2756: 2749: 2741: 2732: 2731: 2729: 2728: 2723: 2718: 2716:Absolute scale 2712: 2710: 2706: 2705: 2703: 2702: 2697: 2692: 2686: 2684: 2680: 2679: 2677: 2676: 2671: 2666: 2661: 2656: 2651: 2646: 2641: 2636: 2630: 2628: 2624: 2623: 2620: 2619: 2617: 2616: 2611: 2606: 2601: 2596: 2591: 2586: 2581: 2576: 2570: 2568: 2564: 2563: 2561: 2560: 2555: 2550: 2545: 2540: 2535: 2530: 2524: 2522: 2518: 2517: 2515: 2514: 2509: 2504: 2499: 2494: 2489: 2484: 2479: 2474: 2469: 2464: 2459: 2454: 2449: 2443: 2441: 2437: 2436: 2434: 2433: 2428: 2423: 2418: 2413: 2408: 2403: 2398: 2393: 2388: 2383: 2378: 2373: 2368: 2363: 2358: 2353: 2348: 2343: 2338: 2332: 2330: 2326: 2325: 2323: 2322: 2317: 2312: 2307: 2302: 2297: 2292: 2287: 2282: 2277: 2272: 2267: 2262: 2257: 2252: 2247: 2242: 2237: 2232: 2227: 2222: 2221: 2220: 2210: 2205: 2204: 2203: 2198: 2188: 2183: 2178: 2177: 2176: 2171: 2161: 2156: 2151: 2146: 2141: 2135: 2133: 2129: 2128: 2126: 2125: 2120: 2114: 2108: 2101: 2099: 2092: 2088: 2087: 2084: 2083: 2081: 2080: 2074: 2069: 2063: 2061: 2057: 2056: 2054: 2053: 2048: 2043: 2038: 2032: 2030: 2023: 2019: 2018: 2015: 2014: 2012: 2011: 2006: 2001: 1996: 1991: 1986: 1980: 1978: 1972: 1971: 1969: 1968: 1962: 1957: 1952: 1947: 1942: 1936: 1934: 1930: 1929: 1927: 1926: 1925: 1924: 1914: 1909: 1904: 1898: 1896: 1889: 1885: 1884: 1879: 1877: 1876: 1869: 1862: 1854: 1848: 1847: 1842: 1836: 1823: 1818: 1813: 1806: 1805:External links 1803: 1802: 1801: 1785: 1782: 1780: 1779: 1754: 1743: 1740:on 2008-10-06. 1717: 1693: 1682: 1659: 1657: 1654: 1653: 1652: 1647: 1642: 1637: 1632: 1627: 1622: 1617: 1612: 1607: 1600: 1597: 1595: 1594: 1589: 1584: 1579: 1574: 1569: 1564: 1559: 1554: 1548: 1546: 1543: 1541: 1540: 1535: 1530: 1525: 1520: 1515: 1510: 1505: 1500: 1494: 1492: 1489: 1487: 1486: 1481: 1476: 1471: 1466: 1461: 1456: 1450: 1448: 1445: 1443: 1442: 1437: 1432: 1427: 1422: 1417: 1412: 1407: 1402: 1397: 1392: 1387: 1382: 1377: 1372: 1367: 1362: 1357: 1352: 1347: 1342: 1337: 1332: 1327: 1322: 1316: 1310: 1305: 1300: 1295: 1290: 1285: 1280: 1275: 1270: 1265: 1259: 1257: 1254: 1252: 1251: 1244:Still in use: 1242: 1241: 1236: 1231: 1226: 1221: 1216: 1211: 1206: 1201: 1196: 1191: 1186: 1181: 1176: 1171: 1166: 1161: 1156: 1146: 1145: 1144: 1134: 1129: 1124: 1118: 1110: 1107: 1105: 1104: 1099: 1094: 1089: 1084: 1079: 1074: 1069: 1064: 1059: 1054: 1049: 1044: 1039: 1033: 1031: 1028: 1012:Main article: 1009: 1006: 961: 958: 957: 956: 949: 934: 929:or 4,184  899:TNT equivalent 893: 890: 889: 888: 885: 857:football pitch 853: 827: 824: 816: 813: 812: 811: 804:Hartree energy 790:. The unit of 768:atomic physics 761: 747: 733: 726:speed of light 720:are useful in 691: 688: 563:British Empire 551:imperial units 541:Imperial units 532: 529: 424:Metric systems 402: 399: 387:nautical miles 372:imperial units 351:. Traditional 330:Main article: 327: 324: 301:nautical miles 257:Gaussian units 192:In antiquity, 177: 174: 128: 127: 42: 40: 33: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 3109: 3098: 3095: 3093: 3090: 3089: 3087: 3072: 3064: 3063: 3060: 3054: 3051: 3049: 3046: 3044: 3041: 3039: 3036: 3034: 3031: 3030: 3028: 3024: 3018: 3015: 3013: 3010: 3008: 3005: 3003: 3000: 2998: 2995: 2993: 2990: 2988: 2985: 2983: 2980: 2978: 2977:degree of arc 2975: 2973: 2970: 2968: 2965: 2963: 2960: 2958: 2955: 2954: 2952: 2950: 2946: 2940: 2937: 2935: 2932: 2930: 2927: 2925: 2922: 2920: 2917: 2915: 2912: 2910: 2907: 2905: 2902: 2900: 2897: 2895: 2892: 2890: 2887: 2885: 2882: 2880: 2877: 2875: 2872: 2870: 2867: 2865: 2862: 2860: 2857: 2855: 2852: 2850: 2847: 2845: 2842: 2840: 2837: 2835: 2832: 2831: 2829: 2827: 2821: 2815: 2812: 2810: 2807: 2805: 2802: 2800: 2797: 2795: 2792: 2790: 2787: 2785: 2782: 2781: 2779: 2777: 2773: 2769: 2762: 2757: 2755: 2750: 2748: 2743: 2742: 2739: 2727: 2724: 2722: 2719: 2717: 2714: 2713: 2711: 2707: 2701: 2698: 2696: 2693: 2691: 2688: 2687: 2685: 2683:List articles 2681: 2675: 2672: 2670: 2667: 2665: 2662: 2660: 2657: 2655: 2652: 2650: 2647: 2645: 2642: 2640: 2637: 2635: 2632: 2631: 2629: 2625: 2615: 2612: 2610: 2607: 2605: 2602: 2600: 2597: 2595: 2592: 2590: 2587: 2585: 2582: 2580: 2577: 2575: 2572: 2571: 2569: 2567:South America 2565: 2559: 2556: 2554: 2551: 2549: 2546: 2544: 2541: 2539: 2536: 2534: 2531: 2529: 2526: 2525: 2523: 2521:North America 2519: 2513: 2510: 2508: 2505: 2503: 2502:South African 2500: 2498: 2495: 2493: 2490: 2488: 2485: 2483: 2480: 2478: 2475: 2473: 2470: 2468: 2465: 2463: 2460: 2458: 2455: 2453: 2450: 2448: 2445: 2444: 2442: 2438: 2432: 2429: 2427: 2424: 2422: 2419: 2417: 2414: 2412: 2409: 2407: 2404: 2402: 2399: 2397: 2394: 2392: 2389: 2387: 2384: 2382: 2379: 2377: 2374: 2372: 2369: 2367: 2364: 2362: 2359: 2357: 2354: 2352: 2349: 2347: 2344: 2342: 2339: 2337: 2334: 2333: 2331: 2327: 2321: 2318: 2316: 2313: 2311: 2308: 2306: 2303: 2301: 2298: 2296: 2293: 2291: 2288: 2286: 2283: 2281: 2278: 2276: 2273: 2271: 2268: 2266: 2263: 2261: 2258: 2256: 2253: 2251: 2250:Luxembourgian 2248: 2246: 2243: 2241: 2238: 2236: 2233: 2231: 2228: 2226: 2223: 2219: 2216: 2215: 2214: 2211: 2209: 2206: 2202: 2199: 2197: 2194: 2193: 2192: 2189: 2187: 2184: 2182: 2179: 2175: 2172: 2170: 2167: 2166: 2165: 2162: 2160: 2157: 2155: 2152: 2150: 2147: 2145: 2142: 2140: 2137: 2136: 2134: 2130: 2124: 2123:gravitational 2121: 2118: 2115: 2112: 2109: 2106: 2103: 2102: 2100: 2096: 2093: 2089: 2078: 2075: 2073: 2070: 2068: 2065: 2064: 2062: 2058: 2052: 2049: 2047: 2044: 2042: 2039: 2037: 2034: 2033: 2031: 2027: 2024: 2020: 2010: 2007: 2005: 2002: 2000: 1997: 1995: 1992: 1990: 1987: 1985: 1982: 1981: 1979: 1977: 1973: 1966: 1963: 1961: 1958: 1956: 1953: 1951: 1948: 1946: 1943: 1941: 1940:Apothecaries' 1938: 1937: 1935: 1931: 1923: 1920: 1919: 1918: 1915: 1913: 1910: 1908: 1905: 1903: 1900: 1899: 1897: 1893: 1890: 1886: 1882: 1875: 1870: 1868: 1863: 1861: 1856: 1855: 1852: 1846: 1843: 1841: 1837: 1834: 1830: 1827: 1824: 1822: 1819: 1817: 1814: 1812: 1809: 1808: 1804: 1800: 1799:0-300-12492-9 1796: 1792: 1788: 1787: 1783: 1776: 1772: 1771:983-9379-27-5 1768: 1764: 1758: 1755: 1752: 1747: 1744: 1739: 1735: 1734: 1728: 1721: 1718: 1707: 1703: 1697: 1694: 1691: 1686: 1683: 1670: 1664: 1661: 1655: 1651: 1648: 1646: 1643: 1641: 1638: 1636: 1633: 1631: 1628: 1626: 1623: 1621: 1618: 1616: 1613: 1611: 1608: 1606: 1603: 1602: 1598: 1593: 1590: 1588: 1585: 1583: 1580: 1578: 1575: 1573: 1570: 1568: 1565: 1563: 1560: 1558: 1555: 1553: 1550: 1549: 1544: 1539: 1536: 1534: 1531: 1529: 1526: 1524: 1521: 1519: 1516: 1514: 1511: 1509: 1506: 1504: 1501: 1499: 1496: 1495: 1491:South America 1490: 1485: 1482: 1480: 1477: 1475: 1472: 1470: 1467: 1465: 1462: 1460: 1457: 1455: 1452: 1451: 1447:North America 1446: 1441: 1438: 1436: 1433: 1431: 1428: 1426: 1423: 1421: 1418: 1416: 1413: 1411: 1408: 1406: 1403: 1401: 1398: 1396: 1393: 1391: 1388: 1386: 1383: 1381: 1378: 1376: 1373: 1371: 1368: 1366: 1363: 1361: 1360:Luxembourgian 1358: 1356: 1353: 1351: 1348: 1346: 1343: 1341: 1338: 1336: 1333: 1331: 1328: 1326: 1323: 1320: 1317: 1314: 1311: 1309: 1306: 1304: 1301: 1299: 1296: 1294: 1291: 1289: 1286: 1284: 1281: 1279: 1276: 1274: 1271: 1269: 1266: 1264: 1263:Ancient Greek 1261: 1260: 1255: 1250: 1247: 1246: 1245: 1240: 1237: 1235: 1232: 1230: 1227: 1225: 1222: 1220: 1217: 1215: 1212: 1210: 1207: 1205: 1202: 1200: 1197: 1195: 1192: 1190: 1187: 1185: 1182: 1180: 1177: 1175: 1172: 1170: 1167: 1165: 1162: 1160: 1157: 1154: 1150: 1147: 1143: 1140: 1139: 1138: 1135: 1133: 1130: 1128: 1125: 1123: 1120: 1119: 1116: 1108: 1103: 1100: 1098: 1097:South African 1095: 1093: 1090: 1088: 1085: 1083: 1080: 1078: 1075: 1073: 1070: 1068: 1065: 1063: 1060: 1058: 1055: 1053: 1050: 1048: 1045: 1043: 1040: 1038: 1035: 1034: 1029: 1027: 1025: 1021: 1015: 1007: 1005: 1003: 999: 997: 984:and US cent ( 983: 979: 975: 971: 967: 959: 954: 951:One stick of 950: 947: 943: 939: 935: 932: 928: 924: 920: 916: 912: 908: 904: 900: 896: 895: 891: 886: 883: 879: 875: 871: 867: 862: 858: 854: 851: 847: 842: 838: 834: 830: 829: 825: 823: 821: 814: 809: 805: 801: 797: 793: 789: 785: 781: 777: 776:electron mass 773: 769: 765: 762: 760:are included. 759: 755: 751: 748: 745: 741: 737: 734: 731: 727: 723: 719: 716: 715: 714: 711: 709: 704: 700: 696: 695:Natural units 690:Natural units 689: 687: 685: 681: 677: 673: 669: 665: 661: 656: 654: 650: 646: 642: 638: 633: 631: 627: 626:hundredweight 623: 619: 615: 611: 607: 603: 599: 595: 590: 588: 584: 583:United States 580: 576: 572: 568: 564: 560: 559:English units 556: 552: 546: 542: 538: 530: 528: 526: 522: 518: 514: 510: 506: 502: 498: 497:SI base units 493: 488: 483: 481: 477: 473: 469: 465: 460: 458: 454: 450: 446: 444: 440: 435: 433: 428: 425: 417: 412: 408: 407:Metric system 401:Metric system 400: 398: 396: 392: 388: 384: 379: 375: 373: 369: 364: 362: 358: 354: 350: 346: 345:United States 342: 337: 333: 325: 323: 321: 317: 312: 310: 306: 302: 298: 294: 290: 286: 282: 278: 274: 270: 266: 262: 258: 254: 249: 247: 243: 239: 235: 231: 230:metric system 227: 222: 218: 216: 215: 210: 209: 204: 200: 195: 189: 183: 175: 173: 171: 167: 163: 162:metric system 155: 151: 147: 143: 139: 135: 124: 121: 113: 102: 99: 95: 92: 88: 85: 81: 78: 74: 71: â€“  70: 66: 65:Find sources: 59: 55: 49: 48: 43:This article 41: 37: 32: 31: 19: 3052: 2982:electronvolt 2664:Mesopotamian 2558:Puerto Rican 1955:Astronomical 1790: 1784:Bibliography 1774: 1762: 1757: 1746: 1738:the original 1730: 1720: 1709:. Retrieved 1705: 1696: 1685: 1673:. Retrieved 1663: 1582:Mesopotamian 1484:Puerto Rican 1243: 1194:Mesopotamian 1019: 1017: 1000: 976:issued by a 968:is called a 963: 944:and popular 942:public media 881: 818: 764:Atomic units 750:Stoney units 736:Planck units 712: 693: 684:pharmacology 676:black powder 657: 634: 591: 548: 484: 461: 456: 447: 436: 429: 422: 380: 376: 365: 360: 355:are used in 338: 335: 313: 250: 245: 236:(distance), 223: 219: 212: 206: 202: 198: 193: 191: 141: 137: 133: 131: 116: 107: 97: 90: 83: 76: 64: 52:Please help 47:verification 44: 3097:Measurement 2528:Costa Rican 2492:Seychellois 2401:Singaporean 2196:Traditional 2051:Metrication 1989:Geometrised 1945:Avoirdupois 1454:Costa Rican 1425:Switzerland 1204:Singaporean 1082:Seychellois 917:impacts. A 911:earthquakes 909:events and 878:HSS vessels 848:(0.53  808:Bohr radius 660:avoirdupois 641:millilitres 637:fluid ounce 618:avoirdupois 587:metrication 332:Metrication 110:August 2015 3086:Categories 2776:Base units 2614:Venezuelan 2599:Paraguayan 2553:Nicaraguan 2431:Vietnamese 2406:Sri Lankan 2391:Philippine 2351:Indonesian 2275:Portuguese 2169:Winchester 2072:Comparison 2022:Background 1960:Electrical 1711:2024-01-11 1538:Venezuelan 1523:Paraguayan 1479:Nicaraguan 1380:Portuguese 1234:Vietnamese 1209:Sri Lankan 1189:Philippine 1164:Indonesian 1113:See also: 903:explosions 870:sq yd 744:free space 579:industrial 575:scientific 571:commercial 180:See also: 168:, and the 80:newspapers 2919:steradian 2834:becquerel 2609:Uruguayan 2594:Colombian 2584:Brazilian 2574:Argentine 2512:Tanzanian 2482:Mauritian 2452:Ethiopian 2416:Taiwanese 2386:Pakistani 2366:Mongolian 2341:Cambodian 2260:Norwegian 2230:Icelandic 2225:Hungarian 2218:Byzantine 2174:Exchequer 1922:Hong Kong 1533:Uruguayan 1518:Colombian 1508:Brazilian 1498:Argentine 1370:Norwegian 1340:Icelandic 1321:(to 1795) 1273:Byzantine 1219:Taiwanese 1184:Pakistani 1142:Hong Kong 1132:Cambodian 1102:Tanzanian 1072:Mauritian 1047:Ethiopian 982:US dollar 897:A ton of 800:Bohr atom 772:electrons 680:gemstones 339:However, 3071:Category 3026:See also 2799:kilogram 2768:SI units 2695:Obsolete 2690:Humorous 2644:Egyptian 2604:Peruvian 2579:Bolivian 2543:Honduran 2507:Tunisian 2487:Moroccan 2477:Malagasy 2462:Eritrean 2457:Egyptian 2447:Algerian 2376:Nepalese 2356:Japanese 2290:Scottish 2280:Romanian 2181:Estonian 2091:Historic 2067:Overview 2036:Overview 1933:Specific 1675:18 March 1599:See also 1562:Egyptian 1528:Peruvian 1503:Bolivian 1469:Honduran 1400:Scottish 1390:Romanian 1303:Estonian 1239:Nepalese 1169:Japanese 1092:Tunisian 1087:Somalian 1077:Moroccan 1067:Malagasy 1052:Eritrean 1042:Egyptian 1037:Algerian 1002:ISO 4217 974:currency 953:dynamite 915:asteroid 907:volcanic 841:American 796:electron 786:and the 756:and the 728:and the 666:and the 565:and the 505:kilogram 499:are the 432:prefixes 293:furlongs 203:knuckles 150:commerce 2987:hectare 2972:decibel 2914:sievert 2909:siemens 2839:coulomb 2789:candela 2726:Modulor 2700:Unusual 2669:Persian 2627:Ancient 2589:Chilean 2548:Mexican 2538:Haitian 2467:Guinean 2371:Myanmar 2310:Swedish 2305:Spanish 2295:Serbian 2285:Russian 2265:Ottoman 2255:Maltese 2245:Latvian 2240:Italian 2186:Finnish 2164:English 2144:Cypriot 2139:Cornish 2046:History 2041:Outline 1976:Natural 1917:Chinese 1895:General 1888:Current 1831:at the 1587:Persian 1545:Ancient 1513:Chilean 1464:Haitian 1430:Turkish 1420:Swedish 1415:Spanish 1405:Serbian 1395:Russian 1365:Maltese 1355:Latvian 1350:Italian 1335:Hungary 1308:Finnish 1298:English 1283:Cypriot 1268:Belgian 1249:Myanmar 1199:Persian 1137:Chinese 1057:Guinean 1024:cooking 989:⁄ 978:country 872:(1.764 798:in the 653:gallons 525:candela 361:de jure 349:Liberia 309:leagues 281:fathoms 214:strides 176:History 164:), the 94:scholar 3002:minute 2962:dalton 2904:radian 2899:pascal 2889:newton 2814:second 2794:kelvin 2784:ampere 2721:N-body 2659:Indian 2634:Arabic 2497:Somali 2472:Libyan 2440:Africa 2411:Syrian 2361:Korean 2346:Indian 2336:Afghan 2300:Slovak 2270:Polish 2208:German 2191:French 2154:Danish 2132:Europe 2098:Metric 2029:Metric 2009:Stoney 1999:Planck 1984:Atomic 1797:  1769:  1615:ISO 31 1577:Indian 1552:Arabic 1474:Mexico 1410:Slovak 1375:Polish 1325:German 1319:French 1313:French 1288:Danish 1256:Europe 1214:Syrian 1174:Korean 1149:Hebrew 1122:Arabic 1062:Libyan 1030:Africa 923:energy 892:Energy 861:soccer 792:energy 782:, the 778:, the 708:nature 649:quarts 577:, and 543:, and 523:, and 517:kelvin 513:ampere 509:second 466:, the 453:French 305:stadia 289:chains 269:inches 240:, and 234:length 208:cubits 96:  89:  82:  75:  67:  3017:tonne 3012:neper 2997:litre 2939:weber 2924:tesla 2879:lumen 2874:katal 2869:joule 2864:hertz 2859:henry 2849:farad 2804:metre 2709:Other 2674:Roman 2654:Hindu 2649:Greek 2533:Cuban 2421:Tatar 2381:Omani 2320:Welsh 2315:Swiss 2235:Irish 2213:Greek 2159:Dutch 2149:Czech 2119:(CGS) 2113:(MTS) 2107:(MKS) 2079:(FPS) 2060:UK/US 1592:Roman 1572:Hindu 1567:Greek 1459:Cuban 1440:Welsh 1435:Tatar 1385:Roman 1345:Irish 1330:Greek 1315:(now) 1293:Dutch 1278:Czech 1224:Tamil 1179:Omani 1159:Hindu 1127:Afgan 966:money 946:books 874:acres 846:acres 837:yards 622:pound 549:Both 501:metre 439:metre 391:knots 357:Burma 320:metre 297:miles 277:yards 265:speed 261:power 199:hands 101:JSTOR 87:books 2992:hour 2934:watt 2929:volt 2854:gray 2809:mole 2426:Thai 2396:Pegu 2329:Asia 1967:(US) 1950:Troy 1795:ISBN 1767:ISBN 1731:The 1677:2010 1229:Thai 1109:Asia 996:euro 936:The 919:gram 913:and 905:and 831:The 826:Area 697:are 678:and 664:troy 658:The 645:pint 610:mile 606:yard 602:foot 598:inch 553:and 521:mole 455:for 443:gram 409:and 395:feet 389:and 285:rods 273:feet 263:and 244:are 242:time 238:mass 224:The 211:and 201:and 73:news 2967:day 2894:ohm 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