Knowledge (XXG)

Joule

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sufficiently apparent to justify the introduction of one based on the electro-magnetic system, viz. the heat generated in one second by the current of an Ampère flowing through the resistance of an Ohm. In absolute measure its value is 10 C.G.S. units, and, assuming Joule's equivalent as 42,000,000, it is the heat necessary to raise 0.238 grammes of water 1° Centigrade, or, approximately, the
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physical considerations; in a given situation some forms may be more helpful than others. In practice, with certain quantities, preference is given to the use of certain special unit names, or combinations of unit names, to facilitate the distinction between different quantities having the same dimension.
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The unit of heat has hitherto been taken variously as the heat required to raise a pound of water at the freezing-point through 1° Fahrenheit or Centigrade, or, again, the heat necessary to raise a kilogramme of water 1° Centigrade. The inconvenience of a unit so entirely arbitrary is
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A derived unit can often be expressed in different ways by combining base units with derived units having special names. Joule, for example, may formally be written newton metre, or kilogram metre squared per second squared. This, however, is an algebraic freedom to be governed by common sense
855:). Joule died in the same year, on 11 October 1889. At the fourth congress (1893), the "international ampere" and "international ohm" were defined, with slight changes in the specifications for their measurement, with the "international joule" being the unit derived from them. 1950:, but has not given the unit of torque any special name, hence it is simply the newton-metre (N⋅m) – a compound name derived from its constituent parts. The use of newton-metres for torque but joules for energy is helpful to avoid misunderstandings and miscommunication. 2709: 2608: 617:{\displaystyle {\begin{alignedat}{3}\mathrm {J} \;&=~\mathrm {kg{\cdot }m^{2}{\cdot }s^{-2}} \\&=~\mathrm {N{\cdot }m} \\&=~\mathrm {Pa{\cdot }m^{3}} \\&=~\mathrm {W{\cdot }s} \\&=~\mathrm {C{\cdot }V} \\\end{alignedat}}} 2273:
th of the kilogramme of water raised 1° Centigrade. Such a heat unit, if found acceptable, might with great propriety, I think, be called the Joule, after the man who has done so much to develop the dynamical theory of
2060:. While the watt-second is equivalent to the joule in both units and meaning, there are some contexts in which the term "watt-second" is used instead of "joule", such as in the rating of photographic 2856: 2620: 436: 2000: 2525: 839:"Such a heat unit, if found acceptable, might with great propriety, I think, be called the Joule, after the man who has done so much to develop the dynamical theory of heat." 808: 909:
The definition of the joule as J = kg⋅m⋅s has remained unchanged since 1946, but the joule as a derived unit has inherited changes in the definitions of the
871: 886:. The joule was explicitly intended as the unit of energy to be used in both electromagnetic and mechanical contexts. The ratification of the definition at the ninth 2473: 2739: 3046: 3016: 2080: 3487: 1939: 887: 2775: 859: 3548: 2499: 2166: 4168: 4212: 3887: 3069: 2365: 2103: 1654: 395: 3012: 2451: 2125: 4354: 419: 3203: 3063: 2435: 2097: 796: 355: 325: 2931:, FAO/WHO Ad Hoc Committee of Experts on Energy and Protein, 1971. A report on the changeover from calories to joules in nutrition. 4295: 3393: 2970: 2336:
9th CGPM, Resolution 3: Triple point of water; thermodynamic scale with a single fixed point; unit of quantity of heat (joule).
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every second in full daylight. A human in a sprint has approximately 3 kJ of kinetic energy, while a cheetah in a
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At the second International Electrical Congress, on 31 August 1889, the joule was officially adopted alongside the
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of liquid water at constant pressure from 0 °C (32 °F) to 100 °C (212 °F) is approximately
986: 1413:. The minimal energy needed to change a bit of data in computation at around room temperature – approximately 2786: 4389: 4374: 3770: 3750: 3492: 2193: 2013: 922: 3171: 2704:{\displaystyle {\tfrac {1}{2}}\cdot 35~{\text{kg}}\cdot \left(35~{\text{m/s}}\right)^{2}=21,400~{\text{J}}} 3902: 3798: 3725: 3715: 3596: 3534: 3196: 1662: 31: 2721:"Energy Units – Energy Explained, Your Guide To Understanding Energy – Energy Information Administration" 2603:{\displaystyle {\tfrac {1}{2}}\cdot 70~{\text{kg}}\cdot \left(10~{\text{m/s}}\right)^{2}=3500~{\text{J}}} 2129: 3842: 3633: 2782: 2720: 1449: 874:
in 1946. The joule was now no longer defined based on electromagnetic unit, but instead as the unit of
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of a force vector and a distance vector. Torque and energy are related to one another by the equation
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Nutritional food labels in most countries express energy in kilojoules (kJ). One square metre of the
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becomes capitalised at the beginning of a sentence and in titles but is otherwise in lower case.
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The megajoule is approximately the kinetic energy of a one megagram (tonne) vehicle moving at
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Report of the Fifty-Second Meeting of the British Association for the Advancement of Science
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by 1 °C, assuming properties similar to those of pure water. The thermal output of the
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Bonnie Berkowitz; Laris Karklis; Reuben Fischer-Baum; Chiqui Esteban (11 September 2017).
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of one volt, or one coulomb-volt (C⋅V). This relationship can be used to define the volt.
3013:"Units with special names and symbols; units that incorporate special names and symbols" 2878: 2301: 1707:. The energy to raise the temperature of Earth's atmosphere 1 °C is approximately 4415: 4364: 4339: 4143: 4108: 4041: 4031: 3947: 3927: 3922: 3907: 3877: 3857: 3815: 3793: 3775: 3675: 3665: 3601: 3421: 3353: 3156: 2217: 2188: 1604: 1596: 1435: 1418: 1049: 1038:
The energy required to lift an apple up 1 m, assuming the apple has a mass of 101.97 g.
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equivalent to the joule. The watt-second is the energy equivalent to the power of one
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The food energy (kcal) in slightly more than half of an ordinary-sized sugar crystal (
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th part of the arbitrary unit of a pound of water raised 1° Fahrenheit and the
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letter (J), but when written in full, it follows the rules for capitalisation of a
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Rathbone, John-Paul; Fontanella-Khan, James; Rovnick, Naomi (11 September 2017).
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in the direction of that force. It is also the energy dissipated as heat when an
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also implied a redefinition of the joule. The Giorgi system was approved by the
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The yottajoule is a little less than the amount of energy required to heat the
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The zettajoule is somewhat more than the amount of energy required to heat the
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Marc Herant; Stirling A. Colgate; Willy Benz; Chris Fryer (October 25, 1997).
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was created from a revision of this article dated 6 March 2024
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required to raise the temperature of 0.239 g of water from 0 °C to 1 °C.
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The typical energy released as heat by a person at rest every 1/60 s (~
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This article is about the unit of energy or work. For other uses, see
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Intuitive representation of the joule as the work of a motive force
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A result of this similarity is that the SI unit for torque is the
1876: 1643:, of electricity or any other form of energy, is 3.6 PJ. 1615:, of electricity or any other form of energy, is 3.6 TJ. 1549:, of electricity or any other form of energy, is 3.6 GJ. 1517:, of electricity or any other form of energy, is 3.6 MJ. 1485:, of electricity or any other form of energy, is 3.6 kJ. 1463: 993: 914: 883: 660: 383: 141: 2910:. National Oceanic and Atmospheric Administration. 19 August 2020 1965:
and a displacement vector. By contrast, torque is a vector – the
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The distinction may be seen also in the fact that energy is a
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1 joule is equal to (approximately unless otherwise stated):
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system", which by virtue of assuming a defined value for the
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of electricity, or any other form of energy, is 3.6 EJ.
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human moving very slowly (0.2 m/s or 0.72 km/h).
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performed by one unit of force (at the time not yet named
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for one second. It is named after the English physicist
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CIPM, 1946, Resolution 2, Definitions of electric units
2197:(revised ed.), New York: Wiley, pp. 516–517, 1481:(76 mph) sprint has approximately 20 kJ. One 2625: 2530: 1635:
of TNT, which is the amount of energy released by the
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One joule is also equivalent to any of the following:
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Proceedings of the International Electrical Congress
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American Heritage Dictionary of the English Language
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as the joule, but they are not interchangeable. The
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A chronological history of the modern metric system
771:unit named for a person, its symbol starts with an 338: 307: 272: 250: 225: 202: 176: 151: 125: 103: 93: 85: 75: 63: 58: 41: 2703: 2602: 2423: 2156:, Fifth Edition (1997). McGraw-Hill, Inc., p. 224. 1994: 809:British Association for the Advancement of Science 755:for one second, or one watt-second (W⋅s) (compare 616: 2776:"International Space Station Final Configuration" 2474:"You Say Calorie, We Say Kilojoule: Who's Right?" 902:. This is the definition declared in the modern 795:had been declared official in 1881, at the first 2422:Ristinen, Robert A.; Kraushaar, Jack J. (2006). 1780:Units with exact equivalents in joules include: 1661:of energy according to its rating of 9.0 on the 1063:tennis ball moving at 6 m/s (22 km/h). 898:, thereby officially deprecating the use of the 872:International Committee for Weights and Measures 807:, in his inauguration speech as chairman of the 819:, to be derived from the electromagnetic units 3150: 1566:(which is often used in energy tables). About 3542: 3197: 1695:by 1 °C, assuming properties similar to 1673:, and the world final energy consumption was 8: 3047:International Bureau of Weights and Measures 3017:International Bureau of Weights and Measures 2250:. Southampton. pp. 1–33. pp. 6–7: 2081:International Bureau of Weights and Measures 1607:was estimated to have a peak wind energy of 1502:(100 mph). The energy required to heat 959:The amount of electricity required to run a 3488:Historical definitions of the SI base units 2904:"Volumes of the World's Oceans from ETOPO1" 1639:, the largest man-made explosion ever. One 803:was adopted as its unit of energy in 1882. 382:displaces a mass through a distance of one 3549: 3535: 3527: 3204: 3190: 3182: 1940:General Conference on Weights and Measures 888:General Conference on Weights and Measures 444: 47: 38: 2929:The adoption of joules as units of energy 2696: 2675: 2665: 2645: 2624: 2622: 2595: 2580: 2570: 2550: 2529: 2527: 2218:"What Is a Joule? - Chemistry Definition" 1988: 1974: 860:International Electrotechnical Commission 751:The work required to produce one watt of 601: 597: 575: 571: 551: 542: 535: 513: 509: 486: 477: 471: 462: 455: 439: 435: 433: 3167:, and does not reflect subsequent edits. 3007: 3005: 2399:"Units of Heat – BTU, Calorie and Joule" 1885: 1088: 627: 2813:"Analysis – How Big Is Hurricane Irma?" 2072: 1537:of combusting 1 barrel (159 L) of 4169:Integrated gasification combined cycle 3052:The International System of Units (SI) 2086:The International System of Units (SI) 1795:1 International Table calorie = 4.1868 933:One joule represents (approximately): 831:. The naming of the unit in honour of 4213:Radioisotope thermoelectric generator 3888:Quantum chromodynamics binding energy 1409:160 zeptojoules is about 1 1097: 1094: 7: 4446: 3058:(8th ed.), pp. 39–40, 53, 976:The energy required to accelerate a 811:(23 August 1882) first proposed the 4470: 4355:World energy supply and consumption 420:SI derived units with special names 2859:from the original on 4 August 2024 1776:23.7304 ft⋅pdl (foot-poundal) 1655:2011 Tōhoku earthquake and tsunami 1395:Common multiples are in bold face 606: 598: 580: 572: 548: 539: 536: 518: 510: 483: 468: 459: 456: 440: 372:International System of Units (SI) 25: 2354:The International System of Units 2154:McGraw-Hill Dictionary of Physics 1995:{\displaystyle E=\tau \theta \,,} 797:International Electrical Congress 107: 4469: 4457: 4445: 4434: 4433: 3511: 3510: 3149: 3108: 2142:The American Heritage Dictionary 1773:0.737562 ft⋅lb (foot-pound) 334: 303: 180: 3075:from the original on 2021-06-04 2291:, metricationmatters.com, 2009. 2109:from the original on 2021-06-04 1806:W⋅h = 3,600 J; 3.6 kJ 1581:, with a mass of approximately 746:electrical potential difference 374:. It is equal to the amount of 3498:System of units of measurement 2982:Los Alamos National Laboratory 2747:Los Alamos National Laboratory 2738:Malik, John (September 1985). 1: 3113:The dictionary definition of 2950:Feynman's Lectures on Physics 2092:(8th ed.), p. 120, 1744:Conversion of units of energy 1082:For additional examples, see 904:International System of Units 827:, in cgs units equivalent to 736:The work required to move an 230:kilocalories (thermochemical) 1084:Orders of magnitude (energy) 1579:International Space Station 4526: 2971:"Neutrinos and Supernovae" 2426:Energy and the Environment 1864: 1741: 1573:of energy was released by 1090:SI multiples of joule (J) 1081: 422:, the joule is defined as 29: 4429: 4159:Fossil fuel power station 3821:Electric potential energy 3766:Thermodynamic temperature 3746:Thermodynamic free energy 3741:Thermodynamic equilibrium 3564: 3506: 2879:World Energy Outlook 2022 1541:. 2 GJ is about the 1394: 1117: 1114: 1111: 1108: 1105: 1102: 882:) over the distance of 1 763:The joule is named after 378:done when a force of one 121: 46: 4230:Concentrated solar power 3452:minute and second of arc 3093:"What Is A Watt Second?" 1701:world energy consumption 1588:and orbital velocity of 1059:The kinetic energy of a 913:(in 1960 and 1967), the 3771:Volume (thermodynamics) 3751:Thermodynamic potential 3654:Mass–energy equivalence 3493:2019 revision of the SI 2194:Fundamentals of Physics 2020:is the angle swept (in 1861:Newton-metre and torque 1667:U.S. energy consumption 1559:The terajoule is about 3726:Quantum thermodynamics 3716:Laws of thermodynamics 3597:Conservation of energy 3145: 3125:Listen to this article 2705: 2604: 2062:electronic flash units 1996: 1942:has given the unit of 1663:moment magnitude scale 990:through a distance of 618: 32:Joule (disambiguation) 3843:Interatomic potential 3634:Energy transformation 3144: 2783:European Space Agency 2706: 2605: 1997: 1756:10 erg (exactly) 1450:Large Hadron Collider 1438:of a flying mosquito. 619: 4498:James Prescott Joule 4291:Efficient energy use 4264:Airborne wind energy 4242:Solar thermal energy 4149:Electricity delivery 3761:Thermodynamic system 3706:Irreversible process 3394:Other accepted units 3176:More spoken articles 2621: 2526: 2242:Siemens, Cal Wilhelm 1973: 1883:(about some angle): 1823: J; 3.6 MJ 948:); about 5,000  946:basal metabolic rate 833:James Prescott Joule 765:James Prescott Joule 432: 404:James Prescott Joule 98:James Prescott Joule 4313:Energy conservation 4235:Photovoltaic system 4208:Nuclear power plant 3893:Quantum fluctuation 3756:Thermodynamic state 3731:Thermal equilibrium 3478:Conversion of units 2978:Los Alamos Sciences 2403:Engineering Toolbox 1697:those of pure water 1669:amounts to roughly 1468:1.4 kilojoules 1091: 1028:mass travelling at 116:... is equal to ... 59:General information 4350:Sustainable energy 4328:Energy development 4318:Energy consumption 4154:Energy engineering 3271:with special names 3146: 2756:on 11 October 2009 2701: 2634: 2600: 2539: 2456:public.web.cern.ch 2056:sustained for one 1992: 1930:, which works out 1626:210 petajoule 1432:160 nanojoule 1417:– is given by the 1089: 929:Practical examples 917:(in 1983) and the 894:in the context of 851:(later renamed to 614: 612: 282:    274:    260:    252:    235:    227:    212:    204:    186:    178:    161:    153:    135:    127:    4485: 4484: 4252:Solar power tower 3898:Quantum potential 3736:Thermal reservoir 3639:Energy transition 3524: 3523: 3402:astronomical unit 3142: 2699: 2695: 2668: 2664: 2648: 2644: 2633: 2598: 2594: 2573: 2569: 2553: 2549: 2538: 2381:"SI Redefinition" 2367:978-92-822-2272-0 1934:to have the same 1924: 1923: 1911:Moment of inertia 1875:, the concept of 1784:1 thermochemical 1729:is approximately 1703:is approximately 1399: 1398: 868:magnetic constant 730: 729: 726: 725: 596: 570: 534: 508: 454: 394:passes through a 366:) is the unit of 295: 294: 104:Conversions 27:SI unit of energy 16:(Redirected from 4515: 4503:SI derived units 4473: 4472: 4461: 4449: 4448: 4437: 4436: 4411:Carbon footprint 4345:Renewable energy 4186:Hydroelectricity 4176:Geothermal power 3619:Energy condition 3551: 3544: 3537: 3528: 3514: 3513: 3206: 3199: 3192: 3183: 3166: 3164: 3153: 3152: 3143: 3133: 3131: 3126: 3112: 3097: 3096: 3089: 3083: 3082: 3081: 3080: 3074: 3057: 3043: 3037: 3036: 3030: 3028: 3019:. Archived from 3009: 3000: 2999: 2997: 2996: 2990: 2984:. Archived from 2975: 2966: 2960: 2959: 2957: 2956: 2946:"Physical Units" 2942:Feynman, Richard 2938: 2932: 2926: 2920: 2919: 2917: 2915: 2900: 2891: 2890: 2888: 2886: 2875: 2869: 2868: 2866: 2864: 2834: 2828: 2827: 2825: 2823: 2808: 2802: 2801: 2799: 2797: 2791: 2785:. Archived from 2780: 2772: 2766: 2765: 2763: 2761: 2755: 2749:. Archived from 2744: 2735: 2729: 2728: 2717: 2711: 2710: 2708: 2707: 2702: 2700: 2697: 2693: 2680: 2679: 2674: 2670: 2669: 2666: 2662: 2649: 2646: 2642: 2635: 2626: 2616: 2610: 2609: 2607: 2606: 2601: 2599: 2596: 2592: 2585: 2584: 2579: 2575: 2574: 2571: 2567: 2554: 2551: 2547: 2540: 2531: 2521: 2515: 2514: 2512: 2511: 2502:. Archived from 2496: 2490: 2489: 2487: 2485: 2476:. Archived from 2470: 2464: 2463: 2458:. Archived from 2452:"Physics – CERN" 2448: 2442: 2441: 2429: 2419: 2413: 2412: 2410: 2409: 2395: 2389: 2388: 2377: 2371: 2370: 2359: 2349: 2343: 2332: 2326: 2314: 2308: 2307: 2298: 2292: 2283: 2277: 2276: 2272: 2271: 2267: 2262: 2261: 2257: 2238: 2232: 2231: 2229: 2228: 2214: 2208: 2207: 2181: 2175: 2174: 2163: 2157: 2151: 2145: 2139: 2133: 2130:Yahoo! Education 2123: 2117: 2116: 2115: 2114: 2108: 2091: 2077: 2016:of) torque, and 2014:vector magnitude 2001: 1999: 1998: 1993: 1886: 1856: 1849: 1839: 1833: 1829: 1819: 1818: 1812: 1805: 1798: 1791: 1769: 1762: 1755: 1732: 1718: 1717: 1710: 1706: 1688: 1687: 1676: 1672: 1660: 1650: 1649: 1634: 1627: 1622: 1621: 1610: 1602: 1594: 1587: 1572: 1565: 1556: 1555: 1532: 1524: 1523: 1512: 1505: 1501: 1492: 1491: 1480: 1469: 1459: 1458: 1445: 1444: 1433: 1428: 1427: 1416: 1406: 1405: 1092: 1072: 1062: 1055: 1034: 1027: 1020: 1010: 996: 989: 982: 972: 965: 943: 830: 767:. As with every 628: 623: 621: 620: 615: 613: 609: 605: 594: 587: 583: 579: 568: 561: 557: 556: 555: 546: 532: 525: 521: 517: 506: 499: 495: 494: 493: 481: 476: 475: 466: 452: 443: 425: 424: 418:and in terms of 388:electric current 359: 354: 353: 350: 349: 346: 343: 340: 329: 323: 322: 319: 318: 315: 312: 309: 291: 289: 283: 275: 268: 266: 261: 253: 246: 241: 236: 228: 221: 219: 213: 205: 190: 187: 179: 169: 167: 162: 154: 136: 128: 51: 39: 21: 4525: 4524: 4518: 4517: 4516: 4514: 4513: 4512: 4508:Units of energy 4488: 4487: 4486: 4481: 4425: 4421:Waste-to-energy 4399: 4335:Energy security 4281: 4275: 4131: 4123: 4102:Natural uranium 4036: 4017:Mechanical wave 3948:Energy carriers 3942: 3782: 3711:Isolated system 3589: 3583: 3560: 3555: 3525: 3520: 3502: 3483:Metric prefixes 3466: 3388: 3270: 3263: 3215: 3210: 3180: 3179: 3168: 3162: 3160: 3157:This audio file 3154: 3147: 3138: 3135: 3129: 3128: 3124: 3105: 3100: 3091: 3090: 3086: 3078: 3076: 3072: 3066: 3055: 3045: 3044: 3040: 3026: 3024: 3023:on 28 June 2009 3011: 3010: 3003: 2994: 2992: 2988: 2973: 2968: 2967: 2963: 2954: 2952: 2940: 2939: 2935: 2927: 2923: 2913: 2911: 2902: 2901: 2894: 2884: 2882: 2877: 2876: 2872: 2862: 2860: 2844:Financial Times 2836: 2835: 2831: 2821: 2819: 2817:Washington Post 2810: 2809: 2805: 2795: 2793: 2792:on 21 July 2011 2789: 2778: 2774: 2773: 2769: 2759: 2757: 2753: 2742: 2737: 2736: 2732: 2719: 2718: 2714: 2658: 2654: 2653: 2619: 2618: 2617: 2613: 2563: 2559: 2558: 2524: 2523: 2522: 2518: 2509: 2507: 2498: 2497: 2493: 2483: 2481: 2472: 2471: 2467: 2450: 2449: 2445: 2438: 2421: 2420: 2416: 2407: 2405: 2397: 2396: 2392: 2379: 2378: 2374: 2368: 2357: 2351: 2350: 2346: 2333: 2329: 2315: 2311: 2300: 2299: 2295: 2284: 2280: 2269: 2265: 2264: 2259: 2255: 2254: 2244:(August 1882). 2240: 2239: 2235: 2226: 2224: 2216: 2215: 2211: 2205: 2189:Resnick, Robert 2185:Halliday, David 2183: 2182: 2178: 2165: 2164: 2160: 2152: 2148: 2140: 2136: 2124: 2120: 2112: 2110: 2106: 2100: 2089: 2079: 2078: 2074: 2070: 2030: 1971: 1970: 1957:quantity – the 1869: 1863: 1854: 1847: 1843:= 4.184 GJ 1837: 1831: 1827: 1816: 1814: 1810: 1803: 1796: 1789: 1767: 1760: 1753: 1746: 1740: 1730: 1715: 1714: 1708: 1704: 1699:. Human annual 1685: 1684: 1674: 1670: 1658: 1647: 1646: 1629: 1625: 1619: 1618: 1608: 1600: 1589: 1582: 1567: 1560: 1553: 1552: 1535:chemical energy 1527: 1521: 1520: 1507: 1503: 1496: 1489: 1488: 1475: 1472:solar radiation 1467: 1466:receives about 1456: 1455: 1442: 1441: 1431: 1425: 1424: 1414: 1403: 1402: 1087: 1080: 1067: 1060: 1053: 1029: 1022: 1015: 1005: 991: 984: 977: 967: 960: 938: 931: 828: 805:Wilhelm Siemens 789: 738:electric charge 611: 610: 585: 584: 559: 558: 547: 523: 522: 497: 496: 482: 467: 445: 430: 429: 412: 357: 337: 333: 327: 306: 302: 287: 285: 281: 273: 264: 262: 259: 251: 245: 239: 237: 234: 226: 217: 215: 211: 203: 188: 185: 177: 165: 163: 160: 152: 134: 126: 54: 35: 28: 23: 22: 15: 12: 11: 5: 4523: 4522: 4519: 4511: 4510: 4505: 4500: 4490: 4489: 4483: 4482: 4480: 4479: 4467: 4455: 4443: 4430: 4427: 4426: 4424: 4423: 4418: 4416:Jevons paradox 4413: 4407: 4405: 4401: 4400: 4398: 4397: 4392: 4387: 4382: 4377: 4372: 4367: 4362: 4357: 4352: 4347: 4342: 4340:Energy storage 4337: 4332: 4331: 4330: 4320: 4315: 4310: 4309: 4308: 4303: 4298: 4287: 4285: 4277: 4276: 4274: 4273: 4272: 4271: 4266: 4256: 4255: 4254: 4249: 4239: 4238: 4237: 4232: 4222: 4217: 4216: 4215: 4210: 4200: 4199: 4198: 4193: 4188: 4178: 4173: 4172: 4171: 4166: 4156: 4151: 4146: 4144:Electric power 4141: 4135: 4133: 4125: 4124: 4122: 4121: 4116: 4111: 4106: 4105: 4104: 4094: 4089: 4084: 4079: 4074: 4073: 4072: 4067: 4062: 4052: 4046: 4044: 4042:Primary energy 4038: 4037: 4035: 4034: 4029: 4024: 4019: 4014: 4013: 4012: 4002: 4001: 4000: 3990: 3989: 3988: 3983: 3973: 3968: 3963: 3958: 3952: 3950: 3944: 3943: 3941: 3940: 3935: 3930: 3925: 3920: 3915: 3910: 3905: 3900: 3895: 3890: 3885: 3880: 3875: 3870: 3865: 3860: 3855: 3850: 3845: 3840: 3839: 3838: 3828: 3823: 3818: 3813: 3808: 3803: 3802: 3801: 3790: 3788: 3784: 3783: 3781: 3780: 3779: 3778: 3773: 3768: 3763: 3758: 3753: 3748: 3743: 3738: 3733: 3728: 3723: 3718: 3713: 3708: 3703: 3698: 3693: 3688: 3683: 3678: 3676:Entropic force 3673: 3666:Thermodynamics 3663: 3658: 3657: 3656: 3651: 3641: 3636: 3631: 3626: 3621: 3616: 3615: 3614: 3604: 3599: 3593: 3591: 3585: 3584: 3582: 3581: 3576: 3571: 3565: 3562: 3561: 3556: 3554: 3553: 3546: 3539: 3531: 3522: 3521: 3519: 3518: 3507: 3504: 3503: 3501: 3500: 3495: 3490: 3485: 3480: 3474: 3472: 3468: 3467: 3465: 3464: 3459: 3454: 3449: 3444: 3439: 3434: 3429: 3424: 3419: 3414: 3409: 3404: 3398: 3396: 3390: 3389: 3387: 3386: 3381: 3376: 3371: 3366: 3361: 3356: 3351: 3346: 3341: 3336: 3331: 3326: 3321: 3316: 3311: 3306: 3301: 3296: 3291: 3289:degree Celsius 3286: 3281: 3275: 3273: 3269:Derived units 3265: 3264: 3262: 3261: 3256: 3251: 3246: 3241: 3236: 3231: 3225: 3223: 3217: 3216: 3211: 3209: 3208: 3201: 3194: 3186: 3169: 3155: 3148: 3136: 3123: 3122: 3121: 3120: 3104: 3103:External links 3101: 3099: 3098: 3084: 3064: 3038: 3001: 2961: 2933: 2921: 2892: 2870: 2829: 2803: 2767: 2730: 2712: 2692: 2689: 2686: 2683: 2678: 2673: 2661: 2657: 2652: 2641: 2638: 2632: 2629: 2611: 2591: 2588: 2583: 2578: 2566: 2562: 2557: 2546: 2543: 2537: 2534: 2516: 2491: 2465: 2462:on 2012-12-13. 2443: 2436: 2414: 2390: 2372: 2366: 2344: 2327: 2309: 2293: 2285:Pat Naughtin: 2278: 2233: 2209: 2203: 2176: 2158: 2146: 2134: 2118: 2098: 2071: 2069: 2066: 2029: 2026: 1991: 1987: 1984: 1981: 1978: 1922: 1921: 1918: 1914: 1913: 1908: 1902: 1901: 1898: 1894: 1893: 1890: 1865:Main article: 1862: 1859: 1858: 1857: 1844: 1834: 1824: 1807: 1800: 1793: 1778: 1777: 1774: 1771: 1764: 1757: 1742:Main article: 1739: 1736: 1735: 1734: 1719: 1712: 1689: 1682: 1677:in 2021. One 1651: 1644: 1623: 1616: 1605:Hurricane Irma 1597:kinetic energy 1557: 1550: 1525: 1518: 1493: 1486: 1460: 1453: 1446: 1439: 1436:kinetic energy 1429: 1422: 1419:Landauer limit 1407: 1397: 1396: 1392: 1391: 1388: 1385: 1382: 1379: 1376: 1372: 1371: 1368: 1365: 1362: 1359: 1356: 1352: 1351: 1348: 1345: 1342: 1339: 1336: 1332: 1331: 1328: 1325: 1322: 1319: 1316: 1312: 1311: 1308: 1305: 1302: 1299: 1296: 1292: 1291: 1288: 1285: 1282: 1279: 1276: 1272: 1271: 1266: 1261: 1258: 1253: 1248: 1244: 1243: 1238: 1233: 1230: 1225: 1220: 1216: 1215: 1210: 1205: 1202: 1197: 1192: 1188: 1187: 1182: 1177: 1174: 1169: 1164: 1160: 1159: 1156: 1153: 1150: 1147: 1144: 1140: 1139: 1136: 1133: 1130: 1127: 1124: 1120: 1119: 1116: 1113: 1110: 1107: 1104: 1100: 1099: 1096: 1079: 1076: 1075: 1074: 1064: 1057: 1050:kinetic energy 1046: 1039: 1036: 1014:travelling at 1002:kinetic energy 998: 974: 957: 930: 927: 841: 840: 788: 785: 761: 760: 749: 728: 727: 724: 723: 718: 714: 713: 708: 704: 703: 698: 694: 693: 688: 684: 683: 678: 674: 673: 668: 664: 663: 658: 654: 653: 648: 644: 643: 640: 636: 635: 632: 625: 608: 604: 600: 593: 590: 588: 586: 582: 578: 574: 567: 564: 562: 560: 554: 550: 545: 541: 538: 531: 528: 526: 524: 520: 516: 512: 505: 502: 500: 498: 492: 489: 485: 480: 474: 470: 465: 461: 458: 451: 448: 446: 442: 438: 437: 411: 408: 293: 292: 279: 270: 269: 257: 248: 247: 243: 232: 223: 222: 209: 207:kilowatt-hours 200: 199: 183: 174: 173: 158: 149: 148: 132: 123: 122: 119: 118: 113: 106: 105: 101: 100: 95: 91: 90: 87: 83: 82: 77: 73: 72: 67: 61: 60: 56: 55: 52: 44: 43: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4521: 4520: 4509: 4506: 4504: 4501: 4499: 4496: 4495: 4493: 4478: 4477: 4468: 4466: 4465: 4460: 4456: 4454: 4453: 4444: 4442: 4441: 4432: 4431: 4428: 4422: 4419: 4417: 4414: 4412: 4409: 4408: 4406: 4402: 4396: 4395:United States 4393: 4391: 4390:South America 4388: 4386: 4383: 4381: 4378: 4376: 4373: 4371: 4368: 4366: 4363: 4361: 4358: 4356: 4353: 4351: 4348: 4346: 4343: 4341: 4338: 4336: 4333: 4329: 4326: 4325: 4324: 4323:Energy policy 4321: 4319: 4316: 4314: 4311: 4307: 4304: 4302: 4299: 4297: 4294: 4293: 4292: 4289: 4288: 4286: 4284: 4278: 4270: 4267: 4265: 4262: 4261: 4260: 4257: 4253: 4250: 4248: 4247:Solar furnace 4245: 4244: 4243: 4240: 4236: 4233: 4231: 4228: 4227: 4226: 4223: 4221: 4218: 4214: 4211: 4209: 4206: 4205: 4204: 4203:Nuclear power 4201: 4197: 4194: 4192: 4189: 4187: 4184: 4183: 4182: 4179: 4177: 4174: 4170: 4167: 4165: 4162: 4161: 4160: 4157: 4155: 4152: 4150: 4147: 4145: 4142: 4140: 4137: 4136: 4134: 4130: 4129:Energy system 4126: 4120: 4117: 4115: 4112: 4110: 4107: 4103: 4100: 4099: 4098: 4095: 4093: 4090: 4088: 4085: 4083: 4082:Gravitational 4080: 4078: 4075: 4071: 4068: 4066: 4063: 4061: 4058: 4057: 4056: 4053: 4051: 4048: 4047: 4045: 4043: 4039: 4033: 4030: 4028: 4025: 4023: 4020: 4018: 4015: 4011: 4010:Hydrogen fuel 4008: 4007: 4006: 4003: 3999: 3996: 3995: 3994: 3991: 3987: 3984: 3982: 3979: 3978: 3977: 3974: 3972: 3969: 3967: 3964: 3962: 3959: 3957: 3954: 3953: 3951: 3949: 3945: 3939: 3936: 3934: 3931: 3929: 3926: 3924: 3921: 3919: 3916: 3914: 3911: 3909: 3906: 3904: 3901: 3899: 3896: 3894: 3891: 3889: 3886: 3884: 3881: 3879: 3876: 3874: 3871: 3869: 3866: 3864: 3861: 3859: 3856: 3854: 3851: 3849: 3846: 3844: 3841: 3837: 3834: 3833: 3832: 3831:Gravitational 3829: 3827: 3824: 3822: 3819: 3817: 3814: 3812: 3809: 3807: 3804: 3800: 3797: 3796: 3795: 3792: 3791: 3789: 3785: 3777: 3774: 3772: 3769: 3767: 3764: 3762: 3759: 3757: 3754: 3752: 3749: 3747: 3744: 3742: 3739: 3737: 3734: 3732: 3729: 3727: 3724: 3722: 3719: 3717: 3714: 3712: 3709: 3707: 3704: 3702: 3701:Heat transfer 3699: 3697: 3696:Heat capacity 3694: 3692: 3689: 3687: 3684: 3682: 3679: 3677: 3674: 3672: 3669: 3668: 3667: 3664: 3662: 3659: 3655: 3652: 3650: 3649:Negative mass 3647: 3646: 3645: 3642: 3640: 3637: 3635: 3632: 3630: 3629:Energy system 3627: 3625: 3622: 3620: 3617: 3613: 3610: 3609: 3608: 3605: 3603: 3600: 3598: 3595: 3594: 3592: 3586: 3580: 3577: 3575: 3572: 3570: 3567: 3566: 3563: 3559: 3552: 3547: 3545: 3540: 3538: 3533: 3532: 3529: 3517: 3509: 3508: 3505: 3499: 3496: 3494: 3491: 3489: 3486: 3484: 3481: 3479: 3476: 3475: 3473: 3469: 3463: 3460: 3458: 3455: 3453: 3450: 3448: 3445: 3443: 3440: 3438: 3435: 3433: 3430: 3428: 3425: 3423: 3422:degree of arc 3420: 3418: 3415: 3413: 3410: 3408: 3405: 3403: 3400: 3399: 3397: 3395: 3391: 3385: 3382: 3380: 3377: 3375: 3372: 3370: 3367: 3365: 3362: 3360: 3357: 3355: 3352: 3350: 3347: 3345: 3342: 3340: 3337: 3335: 3332: 3330: 3327: 3325: 3322: 3320: 3317: 3315: 3312: 3310: 3307: 3305: 3302: 3300: 3297: 3295: 3292: 3290: 3287: 3285: 3282: 3280: 3277: 3276: 3274: 3272: 3266: 3260: 3257: 3255: 3252: 3250: 3247: 3245: 3242: 3240: 3237: 3235: 3232: 3230: 3227: 3226: 3224: 3222: 3218: 3214: 3207: 3202: 3200: 3195: 3193: 3188: 3187: 3184: 3177: 3173: 3158: 3119:at Wiktionary 3118: 3117: 3111: 3107: 3106: 3102: 3094: 3088: 3085: 3071: 3067: 3065:92-822-2213-6 3061: 3054: 3053: 3048: 3042: 3039: 3035: 3022: 3018: 3014: 3008: 3006: 3002: 2991:on 2009-01-14 2987: 2983: 2979: 2972: 2965: 2962: 2951: 2947: 2943: 2937: 2934: 2930: 2925: 2922: 2909: 2905: 2899: 2897: 2893: 2880: 2874: 2871: 2858: 2854: 2850: 2846: 2845: 2840: 2833: 2830: 2818: 2814: 2807: 2804: 2788: 2784: 2777: 2771: 2768: 2752: 2748: 2741: 2734: 2731: 2726: 2722: 2716: 2713: 2690: 2687: 2684: 2681: 2676: 2671: 2659: 2655: 2650: 2639: 2636: 2630: 2627: 2615: 2612: 2589: 2586: 2581: 2576: 2564: 2560: 2555: 2544: 2541: 2535: 2532: 2520: 2517: 2506:on 2011-08-30 2505: 2501: 2495: 2492: 2480:on 2023-05-15 2479: 2475: 2469: 2466: 2461: 2457: 2453: 2447: 2444: 2439: 2437:0-471-73989-8 2433: 2428: 2427: 2418: 2415: 2404: 2400: 2394: 2391: 2387:. 2018-05-11. 2386: 2382: 2376: 2373: 2369: 2363: 2356: 2355: 2348: 2345: 2342: 2338: 2337: 2331: 2328: 2324: 2320: 2319: 2313: 2310: 2305: 2304: 2297: 2294: 2290: 2289: 2282: 2279: 2275: 2249: 2248: 2243: 2237: 2234: 2223: 2219: 2213: 2210: 2206: 2200: 2196: 2195: 2190: 2186: 2180: 2177: 2173:. 2016-01-28. 2172: 2168: 2162: 2159: 2155: 2150: 2147: 2143: 2138: 2135: 2131: 2127: 2122: 2119: 2105: 2101: 2099:92-822-2213-6 2095: 2088: 2087: 2082: 2076: 2073: 2067: 2065: 2063: 2059: 2055: 2051: 2047: 2043: 2039: 2035: 2027: 2025: 2023: 2019: 2015: 2011: 2007: 2002: 1989: 1985: 1982: 1979: 1976: 1968: 1967:cross product 1964: 1960: 1956: 1951: 1949: 1945: 1941: 1937: 1933: 1932:algebraically 1929: 1919: 1917:Displacement 1916: 1915: 1912: 1909: 1907: 1904: 1903: 1899: 1896: 1895: 1891: 1888: 1887: 1884: 1882: 1878: 1874: 1868: 1860: 1852: 1845: 1842: 1835: 1825: 1822: 1808: 1801: 1794: 1787: 1783: 1782: 1781: 1775: 1772: 1765: 1758: 1751: 1750: 1749: 1745: 1737: 1728: 1724: 1720: 1713: 1702: 1698: 1694: 1690: 1683: 1680: 1679:Petawatt-hour 1668: 1664: 1657:in Japan had 1656: 1652: 1645: 1642: 1641:terawatt-hour 1638: 1633: 1624: 1617: 1614: 1613:gigawatt-hour 1606: 1598: 1593: 1586: 1580: 1576: 1571: 1564: 1558: 1551: 1548: 1547:megawatt-hour 1544: 1543:Planck energy 1540: 1536: 1533:is about the 1531: 1526: 1519: 1516: 1515:kilowatt-hour 1511: 1500: 1494: 1487: 1484: 1479: 1473: 1465: 1461: 1454: 1451: 1447: 1440: 1437: 1434:is about the 1430: 1423: 1420: 1412: 1408: 1401: 1400: 1393: 1389: 1386: 1383: 1380: 1377: 1374: 1373: 1369: 1366: 1363: 1360: 1357: 1354: 1353: 1349: 1346: 1343: 1340: 1337: 1334: 1333: 1329: 1326: 1323: 1320: 1317: 1314: 1313: 1309: 1306: 1303: 1300: 1297: 1294: 1293: 1289: 1286: 1283: 1280: 1277: 1274: 1273: 1270: 1267: 1265: 1262: 1259: 1257: 1254: 1252: 1249: 1246: 1245: 1242: 1239: 1237: 1234: 1231: 1229: 1226: 1224: 1221: 1218: 1217: 1214: 1211: 1209: 1206: 1203: 1201: 1198: 1196: 1193: 1190: 1189: 1186: 1183: 1181: 1178: 1175: 1173: 1170: 1168: 1165: 1162: 1161: 1157: 1154: 1151: 1148: 1145: 1142: 1141: 1137: 1134: 1131: 1128: 1125: 1122: 1121: 1101: 1095:Submultiples 1093: 1085: 1077: 1071: 1065: 1058: 1051: 1047: 1044: 1040: 1037: 1033: 1026: 1019: 1013: 1009: 1003: 999: 995: 988: 981: 975: 971: 964: 958: 955: 951: 947: 942: 939:16.6667  936: 935: 934: 928: 926: 924: 920: 916: 912: 907: 905: 901: 897: 893: 889: 885: 881: 877: 873: 869: 865: 861: 858:In 1935, the 856: 854: 850: 846: 838: 837: 836: 834: 826: 822: 818: 814: 810: 806: 802: 798: 794: 786: 784: 782: 778: 774: 770: 766: 758: 757:kilowatt-hour 754: 750: 747: 743: 739: 735: 734: 733: 722: 719: 716: 715: 712: 709: 706: 705: 702: 699: 696: 695: 692: 689: 686: 685: 682: 679: 676: 675: 672: 669: 666: 665: 662: 659: 656: 655: 652: 649: 646: 645: 641: 638: 637: 633: 630: 629: 626: 624: 602: 591: 589: 576: 565: 563: 552: 543: 529: 527: 514: 503: 501: 490: 487: 478: 472: 463: 449: 447: 427: 426: 423: 421: 417: 416:SI base units 409: 407: 406:(1818–1889). 405: 401: 397: 393: 389: 385: 381: 377: 373: 369: 365: 361: 360: 352: 331: 330: 321: 300: 280: 278: 277:electronvolts 271: 258: 256: 249: 233: 231: 224: 210: 208: 201: 198: 194: 184: 182: 175: 172: 159: 157: 150: 147: 143: 139: 133: 131: 130:SI base units 124: 120: 117: 114: 112: 108: 102: 99: 96: 92: 88: 84: 81: 78: 74: 71: 68: 66: 62: 57: 50: 45: 40: 37: 33: 19: 4474: 4462: 4450: 4438: 4220:Oil refinery 4164:Cogeneration 4097:Nuclear fuel 3903:Quintessence 3691:Free entropy 3624:Energy level 3588:Fundamental 3427:electronvolt 3313: 3115: 3087: 3077:, retrieved 3051: 3041: 3032: 3025:. Retrieved 3021:the original 2993:. Retrieved 2986:the original 2977: 2964: 2953:. Retrieved 2949: 2936: 2924: 2912:. Retrieved 2907: 2883:. Retrieved 2873: 2863:11 September 2861:. Retrieved 2842: 2832: 2820:. Retrieved 2816: 2806: 2794:. Retrieved 2787:the original 2770: 2758:. Retrieved 2751:the original 2733: 2724: 2715: 2614: 2519: 2508:. Retrieved 2504:the original 2494: 2482:. Retrieved 2478:the original 2468: 2460:the original 2455: 2446: 2425: 2417: 2406:. Retrieved 2402: 2393: 2384: 2375: 2353: 2347: 2340: 2335: 2330: 2322: 2317: 2312: 2302: 2296: 2287: 2281: 2251: 2246: 2236: 2225:. 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Index

Megajoule
Joule (disambiguation)

Unit system
SI
energy
James Prescott Joule
SI base units
kg
m
s
CGS units
erg
watt-seconds
W
s
kilowatt-hours
kilocalories (thermochemical)
BTUs
electronvolts
/ˈl/
JOOL
/ˈl/
JOWL
energy
International System of Units (SI)
work
newton
metre
electric current

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