167:
537:
156:
376:
converted to the metric system. The systematic effort to develop a universally acceptable system of units dates back to 1790 when the French
National Assembly charged the French Academy of Sciences to come up such a unit system. This system was the precursor to the metric system which was quickly developed in France but did not take on universal acceptance until 1875 when The Metric Convention Treaty was signed by 17 nations. After this treaty was signed, a
57:
716:. Thus base units are the units of the quantities which are independent of other quantities and they are the units of length, mass, time, electric current, temperature, luminous intensity and the amount of substance. Derived units are the units of the quantities which are derived from the base quantities and some of the derived units are the units of speed, work, acceleration, energy, pressure etc.
1967:
Air Canada said yesterday that its Boeing 767 jet ran out of fuel in mid-flight last week because of two mistakes in figuring the fuel supply of the airline's first aircraft to use metric measurements. After both engines lost their power, the pilots made what is now thought to be the first successful
372:, put before him by the Barons of England, King John agreed in Clause 35 "There shall be one measure of wine throughout our whole realm, and one measure of ale and one measure of corn—namely, the London quart;—and one width of dyed and russet and hauberk cloths—namely, two ells below the selvage..."
688:
In informal settings, a quantity may be described as multiples of that of a familiar entity, which can be easier to contextualize than a value in a formal unit system. For instance, a publication may describe an area in a foreign country as a number of multiples of the area of a region local to the
375:
As of the 21st century, the
International System is predominantly used in the world. There exist other unit systems which are used in many places such as the United States Customary System and the Imperial System. The United States is the only industrialized country that has not yet at least mostly
394:
The use of a single unit of measurement for some quantity has obvious drawbacks. For example, it is impractical to use the same unit for the distance between two cities and the length of a needle. Thus, historically they would develop independently. One way to make large numbers or small fractions
320:
of a physical property, used as a factor to express occurring quantities of that property. Units of measurement were among the earliest tools invented by humans. Primitive societies needed rudimentary measures for many tasks: constructing dwellings of an appropriate size and shape, fashioning
1211:
Only like terms may be added. When a unit is divided by itself, the division yields a unitless one. When two different units are multiplied or divided, the result is a new unit, referred to by the combination of the units. For instance, in SI, the unit of speed is metre per second (m/s). See
417:
progressed, a need arose to relate the measurement systems of different quantities, like length and weight and volume. The effort of attempting to relate different traditional systems between each other exposed many inconsistencies, and brought about the development of new units and systems.
703:
For most quantities a unit is necessary to communicate values of that physical quantity. For example, conveying to someone a particular length without using some sort of unit is impossible, because a length cannot be described without a reference used to make sense of the value given.
1201:
1253:
is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.
380:(CGPM) was established. The CGPM produced the current SI, which was adopted in 1954 at the 10th Conference of Weights and Measures. Currently, the United States is a dual-system society which uses both the SI and the US Customary system.
707:
But not all quantities require a unit of their own. Using physical laws, units of quantities can be expressed as combinations of units of other quantities. Thus only a small set of units is required. These units are taken as the
216:(symbol m) is a unit of length that represents a definite predetermined length. For instance, when referencing "10 metres" (or 10 m), what is actually meant is 10 times the definite predetermined length called "metre".
1223:
Some units have special names, however these should be treated like their equivalents. For example, one newton (N) is equivalent to 1 kgâ‹…m/s. Thus a quantity may have several unit designations, for example: the unit for
1288:, which was accidentally destroyed on a mission to Mars in September 1999 (instead of entering orbit) due to miscommunications about the value of forces: different computer programs used different units of measurement (
1040:
1326:'s first aircraft to use metric measurements. This accident was the result of both confusion due to the simultaneous use of metric and Imperial measures and confusion of mass and volume measures.
572:
outside of science, medicine, many sectors of industry, and some of government and military, and despite
Congress having legally authorised metric measure on 28 July 1866. Some steps towards US
488:. As a result, units of measure could vary not only from location to location but from person to person. Units not based on the human body could be based on agriculture, as is the case with the
1360:
was the same as the actually much shorter
Italian mile of 1,480 metres. His estimate for the size of the degree and for the circumference of the Earth was therefore about 25% too small.
959:
The multiplication sign is usually left out, just as it is left out between variables in the scientific notation of formulas. The convention used to express quantities is referred to as
1315:
was lost due to the crew confusing tower instructions (in metres) and altimeter readings (in feet). Three crew and five people on the ground were killed. Thirty-seven were injured.
267:. A standard system of units facilitates this. Scientific systems of units are a refinement of the concept of weights and measures historically developed for commercial purposes.
2324:
906:
402:
At some point in time though, the need to relate the two units might arise, and consequently the need to choose one unit as defining the other or vice versa. For example, an
805:
955:
860:
468:
Historically many of the systems of measurement which had been in use were to some extent based on the dimensions of the human body. Such units, which may be called
219:
The definition, agreement, and practical use of units of measurement have played a crucial role in human endeavour from early ages up to the present. A multitude of
1983:
Nunn, George Emra. "The geographical conceptions of
Columbus: a critical consideration of four problems". No. 14. New York: American Geographical Society, 1924.
1032:
1012:
828:
281:
often use larger and smaller units of measurement than those used in everyday life. The judicious selection of the units of measurement can aid researchers in
2124:
2369:
1729:
1490:
422:
2319:
2007:
239:
1934:
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1884:
377:
1706:
242:(BIPM) is tasked with ensuring worldwide uniformity of measurements and their traceability to the International System of Units (SI).
2916:
426:
1216:. A unit can be multiplied by itself, creating a unit with an exponent (e.g. m/s). Put simply, units obey the laws of indices. (See
2068:
1866:
1791:
121:
2911:
2628:
2448:
1696:
Crease, Robert P. World in the balance: The historic quest for an absolute system of measurement. WW Norton & Company, 2011.
1196:{\displaystyle 2\,\mathrm {metres} \times 3\,\mathrm {seconds} =\{Z\}\{W\}\times =6\,\mathrm {metres} \times \mathrm {seconds} }
93:
437:, SI. Among the different systems of units used in the world, the most widely used and internationally accepted one is SI. The
1949:
1725:
2947:
2942:
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2547:
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2438:
1572:
1410:
1405:
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Different systems of units are based on different choices of a set of related units including fundamental and derived units.
45:
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2522:
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2117:
1916:
1415:
1369:
689:
readership. The propensity for certain concepts to be used frequently can give rise to loosely defined "systems" of units.
683:
631:
100:
74:
1535:
2886:
2673:
619:
in physics are based on physical principle or are selected to make physical equations easier to work with. For example,
576:
have been made, particularly the redefinition of basic US and imperial units to derive exactly from SI units. Since the
2926:
2901:
2754:
2502:
990:
Units can only be added or subtracted if they are the same type; however units can always be multiplied or divided, as
305:
2810:
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140:
107:
1649:
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1498:(in English and French) (3rd ed.). Joint Committee for Guides in Metrology. 2008. pp. 6–7. Archived from
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38:
17:
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78:
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410:. A system of measurement is a collection of units of measurement and rules relating them to each other.
1318:
In 1983, a Boeing 767 (which thanks to its pilot's gliding skills landed safely and became known as the
166:
2785:
2633:
2567:
2465:
2411:
2401:
865:
1987:
1984:
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2217:
2040:"Arithmetic Conventions for Conversion Between Roman [i.e. Ottoman] and Egyptian Measurement"
341:
1499:
766:
1756:
1430:
698:
2241:
2192:
985:
965:. In formulas, the unit can be treated as if it were a specific magnitude of a kind of physical
741:
561:
186:
114:
67:
908:
is the unit. Conversely, the numerical value expressed in an arbitrary unit can be obtained as:
729:
324:
The earliest known uniform systems of measurement seem to have all been created sometime in the
2012:
Specifications, Tolerances, and Other
Technical Requirements for Weighing and Measuring Devices
1930:
311:
1841:
914:
615:
While the above systems of units are based on arbitrary unit values, formalised as standards,
2133:
1816:
1492:
International
Vocabulary of Metrology – Basic and General Concepts and Associated Terms (VIM)
1450:
1375:
833:
389:
369:
220:
201:. Any other quantity of that kind can be expressed as a multiple of the unit of measurement.
160:
1757:"The Wave Mechanics of an Atom with a Non-Coulomb Central Field. Part I. Theory and Methods"
1764:
1710:
1470:
1425:
1330:
1285:
1213:
971:
536:
286:
248:
is the science of developing nationally and internationally accepted units of measurement.
31:
1228:
can be referred to as either N/m (newton per metre) or kg/s (kilogram per second squared).
8:
2906:
2426:
2357:
2024:– Quantity System Library and Calculator for Units Conversions and Quantities predictions
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1239:
430:
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Systems of units vary from country to country. Some of the different systems include the
238:
are often a subject of governmental regulation, to ensure fairness and transparency. The
1768:
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1954:
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1322:) ran out of fuel in mid-flight because of two mistakes in figuring the fuel supply of
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of a physical quantity is expressed as a comparison to a unit of that quantity. The
2453:
1772:
1733:
1618:
1560:
1440:
198:
2027:
544:
in 1860 when
Tuscany became part of modern Italy (ex. one "libbra" = 339.54 grams)
2618:
2046:
1536:"1.3 The Language of Physics: Physical Quantities and Units | Texas Gateway"
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359:(Leviticus 19:35–36). It is a commandment to be honest and have fair measures.
1776:
193:, defined and adopted by convention or by law, that is used as a standard for
155:
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2416:
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as in force today (including any amendments) within the United
Kingdom, from
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228:
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2016:
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991:
670:
have standard definitions of weights and measures that may be used (hence "
655:
620:
557:
438:
2042:
is a manuscript from 1642, in Arabic, which is about units of measurement.
568:. US customary units are still the main system of measurement used in the
2572:
2303:
2202:
2102:
1763:. Vol. 24, no. 1. Cambridge University Press. pp. 89–110.
1293:
737:
573:
541:
485:
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333:
278:
256:
194:
1323:
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are the second, metre, kilogram, ampere, kelvin, mole and candela; all
587:, and the US and imperial avoirdupois pound is now defined as exactly
1400:
966:
580:
agreement of 1959 the US and imperial inch is now defined as exactly
245:
1281:
One example of the importance of agreed units is the failure of the
56:
1792:"Mind your language: Wales, Belgium and other units of measurement"
1308:
1250:
667:
597:
317:
274:
190:
2039:
1329:
When planning his journey across the
Atlantic Ocean in the 1480s,
496:, both based on the amount of land able to be worked by a team of
2978:
2002:
525:
in 1791. The current international standard metric system is the
489:
414:
270:
259:
of physical quantities that need clear definitions to be useful.
252:
1885:"Mars Climate Orbiter Mishap Investigation Board Phase I Report"
1517:
1296:). Considerable amounts of effort, time, and money were wasted.
2648:
1761:
Mathematical Proceedings of the Cambridge Philosophical Society
1587:
529:(abbreviated to SI). An important feature of modern systems is
522:
205:
1842:"ISO 80000-1:2009(en) Quantities and units — Part 1: General"
1834:
1312:
583:
473:
356:
213:
223:
used to be very common. Now there is a global standard, the
1912:
1559:. Cham: Springer International Publishing. pp. 69–78.
1334:
1282:
677:
497:
493:
403:
349:
345:
44:"Weights and measures" redirects here. For other uses, see
1606:
2096:
1249:
is the conversion of the unit of measurement in which a
661:
519:
evolved since the adoption of the original metric system
666:
To reduce the incidence of retail fraud, many national
650:(the energy released by detonating one million tons of
526:
1650:"Measurement in Physics & SI units of Measurement"
634:
may be encountered in sciences. These may include the
37:"Unit of measure" redirects here. For other uses, see
1043:
1020:
1000:
917:
868:
836:
816:
769:
623:(au) were designed to simplify the wave equation in
1950:"Jet's Fuel Ran Out After Metric Conversion Errors"
1715:
as amended by Public Law 110–69 dated 9 August 2007
81:. Unsourced material may be challenged and removed.
1232:
1195:
1026:
1006:
949:
900:
854:
822:
799:
2074:Text of the Units of Measurement Regulations 1995
448:Systems of measurement in modern use include the
2991:
722:
533:. Each unit has a universally recognized size.
2028:List of units with selected conversion factors
2003:How Many? A Dictionary of Units of Measurement
1846:International Organization for Standardization
1730:National Institute of Standards and Technology
674:"), and these are verified by legal officers.
321:clothing, or bartering food or raw materials.
296:, there are no standard units of measurement.
2118:
1668:
1592:(Eighth ed.). McGraw Hill. p. 996.
1207:There are certain rules that apply to units:
368:of 1215 (The Great Charter) with the seal of
306:System of units of measurement § History
1446:Space (punctuation)#Unit symbols and numbers
1116:
1110:
1107:
1101:
924:
918:
843:
837:
782:
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240:International Bureau of Weights and Measures
1617:. Cambridge University Press. p. 246.
480:, based on the length of a stride; and the
2132:
2125:
2111:
1588:Yunus A. Çengel; Michael A. Boles (2002).
1276:
979:
476:, based on the length of the forearm; the
378:General Conference of Weights and Measures
355:Weights and measures are mentioned in the
263:of experimental results is central to the
159:The former Weights and Measures office in
1748:
1256:Unit conversion is often easier within a
1146:
1074:
1047:
692:
560:. Imperial units were mostly used in the
141:Learn how and when to remove this message
1890:. NASA. 10 November 1999. Archived from
678:Informal comparison to familiar concepts
535:
316:A unit of measurement is a standardized
165:
154:
1869:. US Metric Association. Archived from
1754:
1590:Thermodynamics: An Engineering Approach
1556:The Metric System and the United States
255:and metrology, units are standards for
14:
2992:
1947:
1859:
1552:
1337:referred to in the Arabic estimate of
463:
2106:
2097:The Unified Code for Units of Measure
1789:
1411:List of obsolete units of measurement
1406:List of humorous units of measurement
662:Legal control of weights and measures
46:Weights and measures (disambiguation)
1919:from the original on 6 October 2006.
1644:
1642:
1612:
1416:List of unusual units of measurement
1370:Outline of metrology and measurement
1272:that act as power-of-10 multipliers.
1264:than in others, due to the system's
684:List of unusual units of measurement
79:adding citations to reliable sources
50:
445:are derived from these base units.
383:
24:
2155:International System of Units (SI)
1937:from the original on 31 July 2013.
1189:
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1183:
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25:
3011:
1995:
1972:landing of a commercial jetliner.
1639:
1456:Unified Code for Units of Measure
901:{\displaystyle =\mathrm {metre} }
752:is expressed as the product of a
503:
1948:Witkin, Richard (30 July 1983).
1676:"9th edition of the SI Brochure"
1238:This section is an excerpt from
728:This section is an excerpt from
55:
39:Unit of measure (disambiguation)
1977:
1941:
1923:
1901:
1877:
1809:
1783:
1718:
1699:
1233:Converting units of measurement
760:} (a pure number) and a unit :
406:could be defined in terms of a
66:needs additional citations for
2054:New International Encyclopedia
1690:
1581:
1546:
1528:
1510:
1482:
1137:
1131:
1128:
1122:
944:
938:
875:
869:
800:{\displaystyle Z=\{Z\}\times }
794:
788:
730:Physical quantity § Components
632:unusual and non-standard units
13:
1:
2165:US customary units (USCS/USC)
1726:"NIST Handbook 44 Appendix B"
1476:
1461:United States customary units
527:International System of Units
510:International System of Units
458:United States customary units
435:International System of Units
332:among the ancient peoples of
227:(SI), the modern form of the
225:International System of Units
2069:Ireland – Metrology Act 1996
2048:"Weights and Measures"
1790:Marsh, David (17 May 2010).
1333:mistakenly assumed that the
723:Physical quantity components
578:international yard and pound
172:Palazzo della Ragione, Padua
7:
1615:Using SI Units in Astronomy
1565:10.1007/978-3-031-28436-6_6
1363:
975:for more on this treatment.
862:is the numerical value and
10:
3016:
1553:Giunta, Carmen J. (2023).
1367:
1237:
983:
727:
696:
681:
608:
507:
395:easier to read, is to use
387:
309:
303:
299:
43:
36:
29:
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2879:
2819:
2773:
2692:
2581:
2384:
2350:
2343:
2312:
2281:
2274:
2227:
2218:English Engineering Units
2185:
2147:
2140:
2022:Quantity System Framework
1777:10.1017/S0305004100011919
1909:"Korean Air Flight 6316"
1623:10.1017/CBO9781139019798
1431:Numerical-value equation
1356:miles for the size of a
950:{\displaystyle \{Z\}=Z/}
712:and the other units are
699:Base unit of measurement
30:Not to be confused with
2257:Quantum chromodynamical
1933:. Aviation Safety Net.
1755:Hartree, D. R. (1928).
1707:"US Metric Act of 1866"
1277:Real-world implications
986:Dimensional homogeneity
980:Dimensional homogeneity
855:{\displaystyle \{Z\}=2}
748:of a physical quantity
2370:centimetre–gram–second
2134:Systems of measurement
1732:. 2002. Archived from
1613:Dodd, Richard (2012).
1518:"Units of Measurement"
1197:
1028:
1008:
951:
902:
856:
824:
801:
693:Base and derived units
545:
423:centimetre–gram–second
312:History of measurement
174:
170:Units of measurement,
163:
2892:Biblical and Talmudic
2358:metre–kilogram–second
2001:Rowlett, Russ (2018)
1931:"Korean Air incident"
1873:on 23 September 2010.
1451:System of measurement
1376:Dimensional metrology
1198:
1029:
1009:
994:used to explain. Let
952:
903:
857:
830:be "2 metres"; then,
825:
802:
539:
431:metre–kilogram–second
390:System of measurement
310:Further information:
169:
161:Seven Sisters, London
158:
90:"Unit of measurement"
3000:Units of measurement
1540:www.texasgateway.org
1489:"measurement unit".
1471:Units of information
1426:List of metric units
1286:Mars Climate Orbiter
1214:dimensional analysis
1041:
1018:
998:
972:Dimensional analysis
915:
866:
834:
814:
767:
562:British Commonwealth
556:derive from earlier
287:dimensional analysis
236:weights and measures
75:improve this article
32:Level of measurement
2017:Official SI website
1769:1928PCPS...24...89H
1736:on 13 February 2007
1713:on 10 October 2014.
1247:Conversion of units
1240:Conversion of units
464:Traditional systems
344:, and perhaps also
285:(see, for example,
179:unit of measurement
2364:metre–tonne–second
2160:UK imperial system
2085:Metric information
2078:legislation.gov.uk
1955:The New York Times
1656:. 15 November 2018
1381:Forensic metrology
1299:On 15 April 1999,
1193:
1034:"3 seconds", then
1024:
1014:be "2 metres" and
1004:
947:
898:
852:
820:
797:
554:US customary units
546:
175:
164:
2987:
2986:
2875:
2874:
2339:
2338:
2330:Foot–pound–second
2270:
2269:
2247:Heaviside–Lorentz
1911:(Press release).
1897:on 16 March 2011.
1574:978-3-031-28435-9
1396:Quantum metrology
1027:{\displaystyle W}
1007:{\displaystyle Z}
962:quantity calculus
823:{\displaystyle Z}
810:For example, let
433:systems, and the
427:foot–pound–second
265:scientific method
210:physical quantity
151:
150:
143:
125:
27:Quantity standard
16:(Redirected from
3007:
2454:Mesures usuelles
2348:
2347:
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2103:
2058:
2050:
2008:NIST Handbook 44
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1716:
1714:
1709:. Archived from
1703:
1697:
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1672:
1666:
1665:
1663:
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1532:
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1497:
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1441:Seconds pendulum
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829:
827:
826:
821:
806:
804:
803:
798:
645:
643:
600:
595:
592:
586:
384:Systems of units
330:3rd millennia BC
221:systems of units
199:kind of quantity
185:, is a definite
146:
139:
135:
132:
126:
124:
83:
59:
51:
21:
18:Measurement unit
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2769:
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2131:
2093:(official site)
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1907:
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1878:
1865:
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1825:
1823:
1817:"Size of Wales"
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1753:
1749:
1739:
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1691:
1681:
1679:
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1575:
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1516:
1515:
1511:
1505:on 7 June 2011.
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1466:Unit of account
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1147:
1075:
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1042:
1039:
1038:
1019:
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988:
982:
977:
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933:
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912:
881:
867:
864:
863:
835:
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831:
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812:
811:
768:
765:
764:
754:numerical value
740:, any value or
733:
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701:
695:
686:
680:
672:statute measure
664:
654:, TNT) and the
652:trinitrotoluene
641:
639:
613:
607:
605:Natural systems
593:
590:
588:
581:
564:and the former
531:standardization
512:
506:
470:anthropic units
466:
454:imperial system
392:
386:
314:
308:
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294:social sciences
283:problem solving
261:Reproducibility
204:For example, a
183:unit of measure
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136:
130:
127:
84:
82:
72:
60:
49:
42:
35:
28:
23:
22:
15:
12:
11:
5:
3013:
3003:
3002:
2985:
2984:
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2969:Absolute scale
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625:atomic physics
609:Main article:
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566:British Empire
550:imperial units
540:An example of
517:of units have
515:Metric systems
508:Main article:
505:
504:Metric systems
502:
472:, include the
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443:other SI units
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714:derived units
711:
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669:
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637:
633:
628:
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618:
617:natural units
612:
611:Natural units
602:
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558:English units
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450:metric system
446:
444:
440:
439:base SI units
436:
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397:unit prefixes
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229:metric system
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99:
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92: –
91:
87:
86:Find sources:
80:
76:
70:
69:
64:This article
62:
58:
53:
52:
47:
40:
33:
19:
2917:Mesopotamian
2811:Puerto Rican
2208:Astronomical
2084:
2083:
2062:
2061:
2052:
2033:
2032:
2011:
1979:
1969:
1966:
1959:. Retrieved
1953:
1943:
1925:
1903:
1892:the original
1879:
1871:the original
1861:
1849:. Retrieved
1845:
1836:
1824:. Retrieved
1820:
1811:
1799:. Retrieved
1796:the Guardian
1795:
1785:
1760:
1750:
1738:. Retrieved
1734:the original
1720:
1711:the original
1701:
1692:
1680:. Retrieved
1678:. BIPM. 2019
1670:
1658:. Retrieved
1653:
1614:
1608:
1589:
1583:
1555:
1548:
1539:
1530:
1521:
1512:
1500:the original
1491:
1484:
1421:Measure word
1328:
1320:Gimli Glider
1317:
1298:
1280:
1260:such as the
1245:
1206:
992:George Gamow
989:
970:
960:
809:
757:
753:
749:
745:
735:
718:
713:
709:
706:
702:
687:
665:
656:electronvolt
629:
621:atomic units
614:
582:0.0254
547:
513:
467:
447:
420:
412:
401:
393:
374:
363:
361:
354:
342:Indus Valley
323:
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197:of the same
182:
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176:
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111:
104:
97:
85:
73:Please help
68:verification
65:
2781:Costa Rican
2745:Seychellois
2654:Singaporean
2449:Traditional
2304:Metrication
2242:Geometrised
2198:Avoirdupois
1740:18 February
1305:flight 6316
1294:pound force
738:ISO 80000-1
574:metrication
542:metrication
365:Magna Carta
334:Mesopotamia
279:engineering
257:measurement
195:measurement
2867:Venezuelan
2852:Paraguayan
2806:Nicaraguan
2684:Vietnamese
2659:Sri Lankan
2644:Philippine
2604:Indonesian
2528:Portuguese
2422:Winchester
2325:Comparison
2275:Background
2213:Electrical
2034:Historical
1970:dead stick
1968:emergency
1477:References
1324:Air Canada
1301:Korean Air
736:Following
710:base units
644:10 kg
636:solar mass
408:barleycorn
304:See also:
234:In trade,
101:newspapers
2862:Uruguayan
2847:Colombian
2837:Brazilian
2827:Argentine
2765:Tanzanian
2735:Mauritian
2705:Ethiopian
2669:Taiwanese
2639:Pakistani
2619:Mongolian
2594:Cambodian
2513:Norwegian
2483:Icelandic
2478:Hungarian
2471:Byzantine
2427:Exchequer
2175:Hong Kong
1961:21 August
1826:30 August
1801:30 August
1660:15 August
1401:GNU Units
1339:56
1266:coherence
1168:×
1120:×
1069:×
967:dimension
786:×
742:magnitude
548:Both the
370:King John
352:as well.
246:Metrology
187:magnitude
131:June 2019
2994:Category
2948:Obsolete
2943:Humorous
2897:Egyptian
2857:Peruvian
2832:Bolivian
2796:Honduran
2760:Tunisian
2740:Moroccan
2730:Malagasy
2715:Eritrean
2710:Egyptian
2700:Algerian
2629:Nepalese
2609:Japanese
2543:Scottish
2533:Romanian
2434:Estonian
2344:Historic
2320:Overview
2289:Overview
2186:Specific
1935:Archived
1917:Archived
1364:See also
1331:Columbus
1309:Shanghai
1268:and its
1251:quantity
668:statutes
492:and the
340:and the
318:quantity
275:medicine
191:quantity
2979:Modulor
2953:Unusual
2922:Persian
2880:Ancient
2842:Chilean
2801:Mexican
2791:Haitian
2720:Guinean
2624:Myanmar
2563:Swedish
2558:Spanish
2548:Serbian
2538:Russian
2518:Ottoman
2508:Maltese
2498:Latvian
2493:Italian
2439:Finnish
2417:English
2397:Cypriot
2392:Cornish
2299:History
2294:Outline
2229:Natural
2170:Chinese
2148:General
2141:Current
2057:. 1905.
1765:Bibcode
1354:
1292:versus
648:megaton
646:), the
490:furlong
415:science
362:In the
300:History
292:In the
271:Science
253:physics
115:scholar
2974:N-body
2912:Indian
2887:Arabic
2750:Somali
2725:Libyan
2693:Africa
2664:Syrian
2614:Korean
2599:Indian
2589:Afghan
2553:Slovak
2523:Polish
2461:German
2444:French
2407:Danish
2385:Europe
2351:Metric
2282:Metric
2262:Stoney
2252:Planck
2237:Atomic
2099:(UCUM)
1851:12 May
1682:20 May
1629:
1596:
1571:
1358:degree
1303:cargo
1290:newton
969:: see
596:
523:France
456:, and
452:, the
350:Persia
277:, and
212:. The
206:length
117:
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2962:Other
2927:Roman
2907:Hindu
2902:Greek
2786:Cuban
2674:Tatar
2634:Omani
2573:Welsh
2568:Swiss
2488:Irish
2466:Greek
2412:Dutch
2402:Czech
2372:(CGS)
2366:(MTS)
2360:(MKS)
2332:(FPS)
2313:UK/US
2063:Legal
1988:17-18
1895:(PDF)
1888:(PDF)
1503:(PDF)
1496:(PDF)
1313:Seoul
1307:from
746:value
630:Some
589:0.453
474:cubit
357:Bible
338:Egypt
214:metre
208:is a
189:of a
181:, or
122:JSTOR
108:books
2679:Thai
2649:Pegu
2582:Asia
2220:(US)
2203:Troy
2091:BIPM
1963:2007
1913:NTSB
1853:2023
1828:2018
1803:2018
1742:2007
1684:2019
1662:2019
1627:ISBN
1594:ISBN
1569:ISBN
1335:mile
1283:NASA
552:and
498:oxen
494:acre
486:hand
484:and
482:foot
478:pace
404:inch
346:Elam
328:and
94:news
1985:1–2
1773:doi
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1561:doi
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591:592
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