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Watt

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in China is rated at approximately 22 gigawatts). This reflects the maximum power output it can achieve at any point in time. A power station's annual energy output, however, would be recorded using units of energy (not power), typically gigawatt hours. Major energy production or consumption is often
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of power being used (or generated). For example, a power plant that changes its power output from 100 MW to 200 MW in 15 minutes would have a ramp-up rate of 400 MW/h. Gigawatts per hour are used to characterize the ramp-up required of the
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watt was redefined from practical units to absolute units (i.e., using only length, mass, and time). Concretely, this meant that 1 watt was defined as the quantity of energy transferred in a unit of time, namely 1 J/s. In this new definition, 1
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Average household electric power consumption is 1.19 kW in the US, 0.53 kW in the UK. In India it is 0.13 kW (urban) and 0.03 kW (rural) – computed from GJ figures quoted by Nakagami, Murakoshi and
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for a given period; often a calendar year or financial year. One terawatt hour of energy is equal to a sustained power delivery of one terawatt for one hour, or approximately 114 megawatts for a period of one year:
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Many events or machines produce or sustain the conversion of energy on this scale, including large electric motors; large warships such as aircraft carriers, cruisers, and submarines; large
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itself emits 47±2 TW, far less than the energy received from solar radiation. The most powerful lasers from the mid-1960s to the mid-1990s produced power in terawatts, but only for
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A gigawatt is typical average power for an industrial city of one million habitants and also the output of a large power station. The GW unit is thus used for large power plants and
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are closely related but distinct physical quantities. Power is the rate at which energy is generated or consumed and hence is measured in units (e.g. watts) that represent energy
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watt, which implies caution when comparing numerical values from this period with the post-1948 watt. In 1960, the 11th General Conference on Weights and Measures adopted the
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of a household in the United States is about 1 kilowatt. A surface area of 1 square meter on Earth receives typically about one kilowatt of sunlight from the Sun (the
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A laborer over the course of an eight-hour day can sustain an average output of about 75 watts; higher power levels can be achieved for short intervals and by athletes.
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might be an appropriate name for a unit of power. Siemens defined the unit within the existing system of practical units as "the power conveyed by a current of an
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Siemens supported his proposal by asserting that Watt was the first who "had a clear physical conception of power, and gave a rational method for measuring it".
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referenced to 1 femtowatt). This is 0.2739 microvolts across a 75-ohm load or 0.5477 microvolt across a 300-ohm load; the specification takes into account the RF
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A person having a mass of 100 kg who climbs a 3-meter-high ladder in 5 seconds is doing work at a rate of about 600 watts. Mass times acceleration due to
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used by humans worldwide was about 160,000 terawatt-hours in 2019, corresponding to an average continuous power consumption of 18 TW that year.
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Ainslie, M. A. (2015). A century of sonar: Planetary oceanography, underwater noise monitoring, and the terminology of underwater sound. Acoustics Today.
663: 1436:, giving a total energy of 600 J. Another example is the Laser for Fast Ignition Experiments (LFEX) at the Institute of Laser Engineering (ILE), 2243: 2920: 2614: 2283: 1728:
While a watt per hour is a unit of rate of change of power with time, it is not correct to refer to a watt (or watt-hour) as a watt per hour.
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Davidson, CC; Preedy, RM; Cao, J; Zhou, C; Fu, J (October 2010), "Ultra-High-Power Thyristor Valves for HVDC in Developing Countries",
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A petawatt can be produced by the current generation of lasers for time scales on the order of picoseconds. One such laser is
2021: 2713: 2282:: American Council for an Energy-Efficient Economy. Figure 3. Energy Consumption per Household by Fuel Type. 8:214–8:224. 3015: 2340: 1357: 2795: 2122: 2051: 1982: 1949: 2542: 2392: 2171: 1456:
The power output of the Sun is 382.8 YW, about 2 billion times the power estimated to reach Earth's atmosphere.
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Yildiz, I.; Liu, Y. (2018). "Energy units, conversions, and dimensional analysis". In Dincer, I. (ed.).
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Loeb, Norman G.; Johnson, Gregory C.; Thorsen, Tyler J.; Lyman, John M.; et al. (June 15, 2021).
1677:. This same amount of energy would light a 40-watt bulb for 2.5 hours, or a 50-watt bulb for 2 hours. 681:
In October 1908, at the International Conference on Electric Units and Standards in London, so-called
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definitions were established for practical electrical units. Siemens' definition was adopted as the
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intervals. The average lightning strike peaks at 1 TW, but these strikes only last for 30
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Powers measured in nanowatts are also typically used in reference to radio and radar receivers.
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energy applied to the antenna input be specified. These input levels are often stated in dBf (
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Report of the Fifty-Second meeting of the British Association for the Advancement of Science
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gives 2940 J. Dividing this by the time taken (5 s) gives a power of 588 W.
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Powers measured in picowatts are typically used in reference to radio and radar receivers,
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times height divided by the time it takes to lift the object to the given height gives the
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Stetzler, Trudy; Magotra, Neeraj; Gelabert, Pedro; Kasthuri, Preethi; Bangalore, Sridevi.
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on an electric grid to compensate for loss of output from other sources, such as when
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For additional examples of magnitude for multiples and submultiples of the watt, see
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are rated using units of power, typically megawatts or gigawatts (for example, the
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The sound intensity in water corresponding to the international standard reference
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The International System of Units: Its History and Use in Science and Industry
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in August 1882 in his President's Address to the Fifty-Second Congress of the
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uses the unit megawatt for produced electrical power and the equivalent unit
1502: 1288: 1276: 1235:, tools, machines, and heaters. It is also a common unit used to express the 1188: 667: 275: 2777: 2757:"Solar Energy Grew at a Record Pace in 2008 (excerpt from EERE Network News" 1964: 1920:(Report). Gaithersburg, MD: National Institute of Standards and Technology. 1212:"Kilowatt" and "Kilowatts" redirect here. For the musician James Watts, see 3238: 3195: 3180: 3135: 3115: 3032: 2975: 1797: 1659: 1196: 501: 204: 125: 45: 2268:
International Comparison of Household Energy Consumption and Its Indicator
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was created from a revision of this article dated 18 July 2023
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1 Ω.) The watt was defined as equal to 10 units of power in the
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equivalent to approximately 114 megawatts of constant power output.
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Powers measured in femtowatts are typically found in references to
267: 235: 152: 44:"Joules per second" redirects here, it should not be confused with 2174:. Bureau International des Poids et Mesures (BIPM). Archived from 1627:
would need to radiate to match the intensity of the transmitter's
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Nakagami, Hidetoshi; Murakoshi, Chiharu; Iwafune, Yumiko (2008).
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Report of the British Association for the Advancement of Science
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outputs about five milliwatts of light power, whereas a typical
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Bai, Jim; Chen, Aizhu (November 11, 2010). Lewis, Chris (ed.).
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Lord Kelvin: His Influence on Electrical Measurements and Units
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The kilowatt is typically used to express the output power of
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World's most powerful laser: 2 000 trillion watts. What's it?
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This article is about the unit of power. For other uses, see
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watts. Texts written before 1948 are likely to be using the
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were named after leading physicists, Siemens proposed that
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Photovoltaic Industrial Systems: An Environmental Approach
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Webster's International Dictionary of the English Language
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and other electronic signal levels are often measured in
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9th International Conference on AC/DC Power Transmission
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Comprehensive energy systems. Vol 1: Energy fundamentals
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appeared in a November 28, 1947, article in the journal
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have been built with power ratings of up to 2 GW.
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Powers measured in microwatts are typically stated in
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ACEEE Summer Study on Energy Efficiency in Buildings
1735: 1710:/ (365 days × 24 hours per day) ≈ 114 million watts, 649: 2706:"How Many? A Dictionary of Units of Measurement. M" 1259:) (on a clear day at midday, close to the equator). 500:for watt can be found using the above equation and 2481:Davies, J. H.; Davies, D. R. (February 22, 2010). 1669:is turned on for one hour, the energy used is 100 1275:; and some scientific research equipment, such as 1103:performance figures for sensitivity, quieting and 701:were dominant from 1909 until 1948. After the 9th 664:British Association for the Advancement of Science 605: 581: 486: 405: 254:in 1776. Watt's invention was fundamental for the 2014:Marks' Standard Handbook for Mechanical Engineers 1432:. The duration of the pulse was roughly 0.5  3340: 2339:. 1 August 2007. pp. 84–101. Archived from 678:through the difference of potential of a Volt". 2102:. Vol. 52nd Meeting (1882). April 3, 1883. 2044:The Science of measurement: A historical survey 1725:. One kilowatt hour is 3,600,000 watt seconds. 1243:. One kilowatt is approximately equal to 1.34 1239:power output of broadcast radio and television 2670: 2012:Avallone, Eugene A; et al., eds. (2007), 1912: 1888:generation drops to zero as the sun sets. See 1831:The energy in climbing the stairs is given by 1584:. While these units are equivalent for simple 1311:. The earliest citing of the megawatt in the 654:The watt is named after the Scottish inventor 3009: 2205:Morfey, C.L. (2001). Dictionary of Acoustics. 2112: 185:0.7375621 ft⋅lbf/s = 0.001341022 hp 2779:International Bureau of Weights and Measures 2480: 1966:International Bureau of Weights and Measures 1565:per second for delivered heating power in a 1535:International Bureau of Weights and Measures 1139:when this quantity is expressed in decibels. 487:{\displaystyle \mathrm {1~W=1~V{\cdot }A} .} 3300:Historical definitions of the SI base units 2710:University of North Carolina at Chapel Hill 2337:United States Nuclear Regulatory Commission 2136: 2134: 435:(V), meaning the watt is equivalent to the 3016: 3002: 2541:: Lawrence Livermore National Laboratory. 2456:"Global Direct Primary Energy Consumption" 1461:Conventions in the electric power industry 703:General Conference on Weights and Measures 2763:: Department of Energy). March 25, 2009. 2734: 2661: 2506: 1939: 1307:have net summer capacities between about 1219:"kW" redirects here. For other uses, see 274:against a constant opposing force of one 2931:, and does not reflect subsequent edits. 2914: 2462:. Published online at OurWorldInData.org 2131: 2117:. Peter Peregrinus: London. p. 51. 2011: 1913:Newell, David B; Tiesinga, Eite (2019). 1635:Distinction between watts and watt-hours 1505:produced by the plant. For example, the 1344: 2545:from the original on September 15, 2012 2364: 2172:"Resolution 12 of the 11th CGPM (1960)" 2140: 2037: 2035: 2033: 14: 3341: 2982: 2784:The International System of Units (SI) 2767:from the original on October 18, 2011. 2716:from the original on September 4, 2011 2060: 1971:The International System of Units (SI) 1915:The international system of units (SI) 1673:(W·h), 0.1 kilowatt hour, or 360  1283:typically have a peak power output of 2997: 2395:from the original on August 24, 2010. 2041: 1598: 1179:are typically measured in microwatts. 753: 750: 2676: 2617:from the original on August 30, 2011 2573:from the original on August 22, 2015 2289:from the original on January 9, 2015 2030: 1818: 1616:in units of watts, referring to the 1287:, while some produce much more. The 2983:Nelson, Robert A. (February 2000). 2703: 2599: 2594:from the original on August 8, 2015 2226:from the original on March 21, 2017 1977:(8th ed.), pp. 118, 144, 1378:has a peak output of 1.04 GW. 1247:. A small electric heater with one 1099:receivers. For example, meaningful 423:is performed when a current of one 24: 2973: 2901: 2590:(publicity release), August 2015, 2246:from the original on March 3, 2011 1784:(formerly known as a watt balance) 1721:is a unit of energy, equal to the 1620:. This refers to the power that a 1612:usually report the power of their 1358:United States Department of Energy 600: 572: 558: 545: 531: 518: 477: 469: 457: 387: 372: 363: 360: 348: 338: 330: 318: 308: 296: 25: 3370: 2976:"History of the electrical units" 2882: 2862:. Northern Arizona Wind and Sun. 2807:from the original on June 4, 2021 2531:"Crossing the Petawatt threshold" 2369:. Peking: Reuters. Archived from 1994:from the original on June 4, 2021 1591:, they differ when loads exhibit 650:Origin and adoption as an SI unit 3323: 3322: 2959: 2947: 2913: 2866:from the original on May 1, 2009 2569:, IFL Science, August 12, 2015, 2046:. New York: Dover. p. 239. 1766: 1752: 1738: 1525:are sometimes used, for example 1251:can use 1 kilowatt. The average 1083:is approximately 0.65 aW/m. 658:. The unit name was proposed by 419:, one watt is the rate at which 227:. The watt is named in honor of 219:or 1 kg⋅m⋅s. It is used to 2852: 2818: 2771: 2749: 2728: 2697: 2629: 2578: 2557: 2523: 2474: 2440: 2421: 2399: 2377: 2358: 2322: 2301: 2258: 2231: 2208: 2199: 2190: 2164: 2106: 2068:"Address by C. William Siemens" 2042:Klein, Herbert Arthur (1988) . 1869: 1859: 1485:produced by a generator, while 427:(A) flows across an electrical 3310:System of units of measurement 2090: 2078: 2005: 1958: 1933: 1906: 1825: 1481:) refers by convention to the 1451: 1291:, for example, uses more than 1203:, referenced to one milliwatt. 1195:uses less than one milliwatt. 1182: 1150: 1086: 13: 1: 2989:. Via Satellite. ATI courses. 2964:The dictionary definition of 2790:(8th ed.), p. 132, 1899: 1875:Watts per hour refers to the 1409: 1385: 1365: 1321:) is a reference in the 1900 1262: 1206: 1142: 1122: 1070: 728:International System of Units 231:(1736–1819), an 18th-century 209:International System of Units 3023: 2642:Geophysical Research Letters 1944:. Elsevier. pp. 12–13. 1788:Nominal power (photovoltaic) 1697:Power output = energy / time 733: 730:(SI) as the unit of power. 7: 2483:"Earth's surface heat flux" 1731: 1702:1 terawatt hour per year = 1507:Embalse nuclear power plant 1430:chirped pulse amplification 1297:diesel-electric locomotives 740:Orders of magnitude (power) 666:. Noting that units in the 624: 443:of an electrical circuit). 261: 10: 3375: 1808:Wattage conversion factors 1602: 1521:(i.e. electricity). Other 1414: 1376:Doel Nuclear Power Station 1360:video explaining gigawatts 1299:typically produce and use 1253:electric power consumption 1218: 1211: 737: 43: 36: 29: 3318: 3282: 3204: 3079: 3031: 2385:"Not on my beach, please" 2280:Pacific Grove, California 1513:to generate 2,109 MW 1314:Oxford English Dictionary 1058: 773: 770: 767: 764: 761: 758: 746:SI multiples of watt (W) 668:practical system of units 178:English Engineering Units 173: 148: 121: 117: 99: 89: 81: 71: 59: 54: 39:Melbourne Workers Theatre 3264:minute and second of arc 2826:"Avedøre Power Station ( 1926:10.6028/nist.sp.330-2019 1618:effective radiated power 1605:Effective radiated power 1446:Earth's energy imbalance 1059:Common multiples are in 270:is held constant at one 27:SI derived unit of power 3305:2019 revision of the SI 2409:[Key numbers]. 2157:Encyclopædia Britannica 2147:"Units, Physical"  1567:combined heat and power 1467:electric power industry 1417:List of petawatt lasers 1157:medical instrumentation 606:{\displaystyle \Omega } 2909: 2889:Listen to this article 2735:Cleveland, CJ (2007). 2113:Tunbridge, P. (1992). 1361: 1131:and in the science of 607: 583: 488: 407: 2908: 2742:Encyclopedia of Earth 2373:on November 21, 2020. 2242:. Datasheet Archive. 2142:Fleming, John Ambrose 2086:"Siemens, 1883, p. 6" 1571:Avedøre Power Station 1355: 1161:electroencephalograph 699:"international units" 619:electrical resistance 608: 584: 489: 408: 282:is done is one watt. 256:Industrial Revolution 32:Watt (disambiguation) 3206:Other accepted units 2956:at Wikimedia Commons 2940:More spoken articles 2860:"Inverter Selection" 2663:10.1029/2021GL093047 2307:Elena Papadopoulou, 1654:For example, when a 1593:electrical reactance 1509:in Argentina uses a 1309:500 and 1300 MW 1305:nuclear power plants 1281:electric locomotives 1214:KiloWatts (musician) 1171:for devices such as 1159:systems such as the 714:watt = 1.00019 597: 508: 447: 429:potential difference 286: 278:, the rate at which 3290:Conversion of units 2677:Williams, David R. 2654:2021GeoRL..4893047L 2508:10.5194/se-1-5-2010 2499:2010SolE....1....5D 2391:. August 19, 2010. 2346:on 16 February 2008 1793:One Watt Initiative 1578:alternating current 1527:gigawatt electrical 1471:megawatt electrical 1221:kW (disambiguation) 747: 240:mechanical engineer 112:... is equal to ... 3083:with special names 2910: 2220:The New York Times 1760:Engineering portal 1599:Radio transmission 1422:Lawrence Livermore 1362: 1165:electrocardiograph 745: 689:watt. (Also used: 660:C. William Siemens 636:rate of doing work 603: 579: 484: 403: 183:    175:    158:    150:    131:    123:    3336: 3335: 3214:astronomical unit 2952:Media related to 2906: 2840:on March 17, 2014 2460:Our World in Data 2417:on July 10, 2011. 2222:, July 18, 2010, 2178:on April 20, 2020 2023:978-0-07-142867-5 1819:Explanatory notes 1353: 1331:also states that 1231:and the power of 1107:require that the 1067: 1066: 556: 529: 517: 468: 456: 359: 329: 307: 295: 266:When an object's 246:who improved the 211:(SI), equal to 1 199:) is the unit of 189: 188: 100:Conversions 16:(Redirected from 3366: 3354:SI derived units 3326: 3325: 3018: 3011: 3004: 2995: 2994: 2990: 2979: 2974:Borvon, Gérard. 2963: 2951: 2930: 2928: 2917: 2916: 2907: 2897: 2895: 2890: 2876: 2875: 2873: 2871: 2856: 2850: 2849: 2847: 2845: 2836:. Archived from 2822: 2816: 2815: 2814: 2812: 2806: 2789: 2775: 2769: 2768: 2753: 2747: 2746: 2732: 2726: 2725: 2723: 2721: 2701: 2695: 2694: 2692: 2690: 2679:"Sun Fact Sheet" 2674: 2668: 2667: 2665: 2633: 2627: 2626: 2624: 2622: 2603: 2597: 2595: 2582: 2576: 2574: 2561: 2555: 2554: 2552: 2550: 2527: 2521: 2520: 2510: 2478: 2472: 2471: 2469: 2467: 2444: 2438: 2436: 2425: 2419: 2418: 2403: 2397: 2396: 2381: 2375: 2374: 2362: 2356: 2355: 2353: 2351: 2345: 2334: 2326: 2320: 2311:, Springer 2011 2305: 2299: 2298: 2296: 2294: 2288: 2273: 2262: 2256: 2255: 2253: 2251: 2235: 2229: 2227: 2212: 2206: 2203: 2197: 2194: 2188: 2187: 2185: 2183: 2168: 2162: 2161: 2149: 2138: 2129: 2128: 2110: 2104: 2103: 2094: 2088: 2082: 2076: 2075: 2064: 2058: 2057: 2039: 2028: 2026: 2009: 2003: 2002: 2001: 1999: 1993: 1976: 1962: 1956: 1955: 1937: 1931: 1930:§2.3.4, Table 4. 1929: 1919: 1910: 1893: 1873: 1867: 1863: 1857: 1855: 1848: 1841: 1834: 1829: 1776: 1771: 1770: 1762: 1757: 1756: 1748: 1743: 1742: 1709: 1707: 1685:Three Gorges Dam 1668: 1667: 1576:When describing 1569:station such as 1556: 1546: 1491:thermal megawatt 1487:megawatt thermal 1453: 1438:Osaka University 1411: 1387: 1367: 1354: 1310: 1302: 1294: 1286: 1264: 1257:solar irradiance 1208: 1184: 1152: 1144: 1124: 1088: 1072: 748: 744: 695:practical system 692: 612: 610: 609: 604: 588: 586: 585: 580: 575: 571: 566: 565: 554: 544: 539: 538: 527: 515: 498:unit conversions 493: 491: 490: 485: 480: 476: 466: 454: 417:electromagnetism 412: 410: 409: 404: 399: 398: 397: 385: 380: 379: 370: 357: 347: 346: 337: 327: 317: 316: 305: 293: 272:meter per second 184: 176: 169: 159: 151: 132: 124: 52: 51: 21: 3374: 3373: 3369: 3368: 3367: 3365: 3364: 3363: 3339: 3338: 3337: 3332: 3314: 3295:Metric prefixes 3278: 3200: 3082: 3075: 3027: 3022: 2944: 2943: 2932: 2926: 2924: 2921:This audio file 2918: 2911: 2902: 2899: 2893: 2892: 2888: 2885: 2880: 2879: 2869: 2867: 2858: 2857: 2853: 2843: 2841: 2824: 2823: 2819: 2810: 2808: 2804: 2798: 2787: 2776: 2772: 2755: 2754: 2750: 2733: 2729: 2719: 2717: 2704:Rowlett, Russ. 2702: 2698: 2688: 2686: 2675: 2671: 2634: 2630: 2620: 2618: 2605: 2604: 2600: 2584: 2583: 2579: 2563: 2562: 2558: 2548: 2546: 2529: 2528: 2524: 2479: 2475: 2465: 2463: 2445: 2441: 2426: 2422: 2407:"Chiffres clés" 2405: 2404: 2400: 2383: 2382: 2378: 2363: 2359: 2349: 2347: 2343: 2332: 2328: 2327: 2323: 2306: 2302: 2292: 2290: 2286: 2271: 2263: 2259: 2249: 2247: 2236: 2232: 2214: 2213: 2209: 2204: 2200: 2195: 2191: 2181: 2179: 2170: 2169: 2165: 2139: 2132: 2125: 2111: 2107: 2096: 2095: 2091: 2083: 2079: 2066: 2065: 2061: 2054: 2040: 2031: 2024: 2010: 2006: 1997: 1995: 1991: 1985: 1974: 1963: 1959: 1952: 1938: 1934: 1917: 1911: 1907: 1902: 1897: 1896: 1874: 1870: 1864: 1860: 1850: 1843: 1836: 1832: 1830: 1826: 1821: 1772: 1765: 1758: 1751: 1744: 1737: 1734: 1705: 1703: 1665: 1663: 1637: 1607: 1601: 1555: 1548: 1544: 1538: 1532: 1520: 1516: 1511:fission reactor 1500: 1496: 1480: 1463: 1419: 1380:HVDC converters 1345: 1308: 1301:3 and 5 MW 1300: 1292: 1284: 1249:heating element 1237:electromagnetic 1233:electric motors 1224: 1217: 1133:radio astronomy 1117:input impedance 1105:signal-to-noise 743: 736: 690: 652: 627: 615:SI derived unit 598: 595: 594: 567: 561: 557: 540: 534: 530: 511: 509: 506: 505: 496:Two additional 472: 450: 448: 445: 444: 421:electrical work 390: 386: 381: 375: 371: 366: 342: 341: 333: 312: 311: 289: 287: 284: 283: 264: 248:Newcomen engine 225:energy transfer 182: 174: 160: 157: 149: 130: 122: 48: 42: 35: 28: 23: 22: 15: 12: 11: 5: 3372: 3362: 3361: 3359:Units of power 3356: 3351: 3334: 3333: 3331: 3330: 3319: 3316: 3315: 3313: 3312: 3307: 3302: 3297: 3292: 3286: 3284: 3280: 3279: 3277: 3276: 3271: 3266: 3261: 3256: 3251: 3246: 3241: 3236: 3231: 3226: 3221: 3216: 3210: 3208: 3202: 3201: 3199: 3198: 3193: 3188: 3183: 3178: 3173: 3168: 3163: 3158: 3153: 3148: 3143: 3138: 3133: 3128: 3123: 3118: 3113: 3108: 3103: 3101:degree Celsius 3098: 3093: 3087: 3085: 3081:Derived units 3077: 3076: 3074: 3073: 3068: 3063: 3058: 3053: 3048: 3043: 3037: 3035: 3029: 3028: 3021: 3020: 3013: 3006: 2998: 2992: 2991: 2980: 2971: 2957: 2933: 2919: 2912: 2900: 2887: 2886: 2884: 2883:External links 2881: 2878: 2877: 2851: 2828:Avedøre værket 2817: 2796: 2770: 2748: 2727: 2696: 2669: 2628: 2598: 2577: 2556: 2522: 2473: 2448:Hannah Ritchie 2439: 2420: 2398: 2376: 2357: 2321: 2300: 2257: 2230: 2207: 2198: 2189: 2163: 2152:Chisholm, Hugh 2130: 2123: 2105: 2089: 2077: 2059: 2052: 2029: 2022: 2004: 1983: 1957: 1950: 1932: 1904: 1903: 1901: 1898: 1895: 1894: 1878: 1877:rate of change 1868: 1858: 1823: 1822: 1820: 1817: 1816: 1815: 1810: 1805: 1803:Solar constant 1800: 1795: 1790: 1785: 1782:Kibble balance 1778: 1777: 1774:Physics portal 1763: 1749: 1733: 1730: 1712: 1711: 1699: 1698: 1690:terawatt hours 1681:Power stations 1650: 1636: 1633: 1625:dipole antenna 1610:Radio stations 1603:Main article: 1600: 1597: 1553: 1542: 1530: 1518: 1514: 1498: 1494: 1483:electric power 1478: 1462: 1459: 1458: 1457: 1454: 1449: 1412: 1407: 1392:primary energy 1388: 1383: 1368: 1343: 1342: 1295:, while heavy 1285:5 or 6 MW 1277:supercolliders 1265: 1260: 1210: 1209: 1204: 1185: 1180: 1163:(EEG) and the 1153: 1148: 1145: 1140: 1125: 1120: 1089: 1084: 1077:sound pressure 1073: 1065: 1064: 1056: 1055: 1052: 1049: 1046: 1043: 1040: 1036: 1035: 1032: 1029: 1026: 1023: 1020: 1016: 1015: 1012: 1009: 1006: 1003: 1000: 996: 995: 992: 989: 986: 983: 980: 976: 975: 972: 969: 966: 963: 960: 956: 955: 950: 945: 942: 937: 932: 928: 927: 922: 917: 914: 909: 904: 900: 899: 894: 889: 886: 881: 876: 872: 871: 866: 861: 858: 853: 848: 844: 843: 838: 833: 830: 825: 820: 816: 815: 812: 809: 806: 803: 800: 796: 795: 792: 789: 786: 783: 780: 776: 775: 772: 769: 766: 763: 760: 756: 755: 752: 735: 732: 726:watt into the 697:of units. The 651: 648: 647: 646: 643: 626: 623: 602: 578: 574: 570: 564: 560: 553: 550: 547: 543: 537: 533: 526: 523: 520: 514: 483: 479: 475: 471: 465: 462: 459: 453: 402: 396: 393: 389: 384: 378: 374: 369: 365: 362: 356: 353: 350: 345: 340: 336: 332: 326: 323: 320: 315: 310: 304: 301: 298: 292: 263: 260: 187: 186: 180: 171: 170: 155: 146: 145: 128: 119: 118: 115: 114: 109: 102: 101: 97: 96: 91: 87: 86: 83: 79: 78: 73: 69: 68: 63: 57: 56: 26: 9: 6: 4: 3: 2: 3371: 3360: 3357: 3355: 3352: 3350: 3347: 3346: 3344: 3329: 3321: 3320: 3317: 3311: 3308: 3306: 3303: 3301: 3298: 3296: 3293: 3291: 3288: 3287: 3285: 3281: 3275: 3272: 3270: 3267: 3265: 3262: 3260: 3257: 3255: 3252: 3250: 3247: 3245: 3242: 3240: 3237: 3235: 3234:degree of arc 3232: 3230: 3227: 3225: 3222: 3220: 3217: 3215: 3212: 3211: 3209: 3207: 3203: 3197: 3194: 3192: 3189: 3187: 3184: 3182: 3179: 3177: 3174: 3172: 3169: 3167: 3164: 3162: 3159: 3157: 3154: 3152: 3149: 3147: 3144: 3142: 3139: 3137: 3134: 3132: 3129: 3127: 3124: 3122: 3119: 3117: 3114: 3112: 3109: 3107: 3104: 3102: 3099: 3097: 3094: 3092: 3089: 3088: 3086: 3084: 3078: 3072: 3069: 3067: 3064: 3062: 3059: 3057: 3054: 3052: 3049: 3047: 3044: 3042: 3039: 3038: 3036: 3034: 3030: 3026: 3019: 3014: 3012: 3007: 3005: 3000: 2999: 2996: 2988: 2987: 2981: 2977: 2972: 2970:at Wiktionary 2969: 2968: 2962: 2958: 2955: 2950: 2946: 2945: 2941: 2937: 2922: 2865: 2861: 2855: 2839: 2835: 2831: 2829: 2821: 2803: 2799: 2797:92-822-2213-6 2793: 2786: 2785: 2780: 2774: 2766: 2762: 2758: 2752: 2744: 2743: 2738: 2731: 2715: 2711: 2707: 2700: 2684: 2680: 2673: 2664: 2659: 2655: 2651: 2647: 2643: 2639: 2632: 2616: 2612: 2608: 2602: 2593: 2589: 2588: 2581: 2572: 2568: 2567: 2560: 2544: 2540: 2536: 2532: 2526: 2518: 2514: 2509: 2504: 2500: 2496: 2492: 2488: 2484: 2477: 2461: 2457: 2453: 2449: 2443: 2435: 2431: 2424: 2416: 2412: 2408: 2402: 2394: 2390: 2389:The Economist 2386: 2380: 2372: 2368: 2361: 2342: 2338: 2331: 2325: 2318: 2314: 2310: 2304: 2285: 2281: 2277: 2270: 2269: 2261: 2245: 2241: 2234: 2225: 2221: 2217: 2211: 2202: 2193: 2177: 2173: 2167: 2159: 2158: 2153: 2148: 2143: 2137: 2135: 2126: 2124:0-86341-237-8 2120: 2116: 2109: 2101: 2100: 2093: 2087: 2081: 2073: 2069: 2063: 2055: 2053:9780486144979 2049: 2045: 2038: 2036: 2034: 2025: 2019: 2015: 2008: 1990: 1986: 1984:92-822-2213-6 1980: 1973: 1972: 1967: 1961: 1953: 1951:9780128149256 1947: 1943: 1936: 1927: 1923: 1916: 1909: 1905: 1891: 1887: 1883: 1876: 1872: 1862: 1853: 1846: 1839: 1828: 1824: 1814: 1811: 1809: 1806: 1804: 1801: 1799: 1796: 1794: 1791: 1789: 1786: 1783: 1780: 1779: 1775: 1769: 1764: 1761: 1755: 1750: 1747: 1746:Energy portal 1741: 1736: 1729: 1726: 1724: 1720: 1715: 1701: 1700: 1696: 1695: 1694: 1691: 1688:expressed as 1686: 1682: 1678: 1676: 1672: 1661: 1657: 1652: 1649:per unit time 1648: 1646: 1642: 1632: 1630: 1626: 1623: 1619: 1615: 1611: 1606: 1596: 1594: 1590: 1587: 1583: 1579: 1574: 1572: 1568: 1564: 1560: 1551: 1541: 1536: 1528: 1524: 1512: 1508: 1504: 1503:thermal power 1497:, or MWth, MW 1492: 1488: 1484: 1476: 1472: 1468: 1455: 1450: 1447: 1443: 1439: 1435: 1431: 1427: 1423: 1418: 1413: 1408: 1405: 1401: 1397: 1393: 1389: 1384: 1381: 1377: 1373: 1369: 1364: 1363: 1359: 1340: 1339: 1334: 1330: 1326: 1325: 1320: 1316: 1315: 1306: 1298: 1290: 1289:Eurostar e300 1282: 1278: 1274: 1270: 1266: 1261: 1258: 1254: 1250: 1246: 1242: 1238: 1234: 1230: 1226: 1225: 1222: 1215: 1205: 1202: 1198: 1197:Audio signals 1194: 1190: 1189:laser pointer 1186: 1181: 1178: 1174: 1170: 1166: 1162: 1158: 1154: 1149: 1146: 1141: 1138: 1134: 1130: 1126: 1121: 1119:of the tuner. 1118: 1114: 1110: 1106: 1102: 1098: 1094: 1090: 1085: 1082: 1078: 1074: 1069: 1068: 1062: 1057: 1053: 1050: 1047: 1044: 1041: 1038: 1037: 1033: 1030: 1027: 1024: 1021: 1018: 1017: 1013: 1010: 1007: 1004: 1001: 998: 997: 993: 990: 987: 984: 981: 978: 977: 973: 970: 967: 964: 961: 958: 957: 954: 951: 949: 946: 943: 941: 938: 936: 933: 930: 929: 926: 923: 921: 918: 915: 913: 910: 908: 905: 902: 901: 898: 895: 893: 890: 887: 885: 882: 880: 877: 874: 873: 870: 867: 865: 862: 859: 857: 854: 852: 849: 846: 845: 842: 839: 837: 834: 831: 829: 826: 824: 821: 818: 817: 813: 810: 807: 804: 801: 798: 797: 793: 790: 787: 784: 781: 778: 777: 757: 751:Submultiples 749: 741: 731: 729: 725: 721: 720:international 717: 716:international 713: 708: 707:international 705:in 1948, the 704: 700: 696: 688: 687:international 684: 683:international 679: 677: 673: 669: 665: 661: 657: 644: 641: 637: 633: 629: 628: 622: 620: 616: 592: 576: 568: 562: 551: 548: 541: 535: 524: 521: 512: 503: 499: 494: 481: 473: 463: 460: 451: 442: 438: 434: 430: 426: 422: 418: 413: 400: 394: 391: 382: 376: 367: 354: 351: 343: 334: 324: 321: 313: 302: 299: 290: 281: 277: 273: 269: 259: 257: 253: 250:with his own 249: 245: 241: 237: 234: 230: 226: 222: 218: 214: 210: 206: 202: 198: 194: 181: 179: 172: 168: 164: 156: 154: 147: 144: 140: 136: 129: 127: 126:SI base units 120: 116: 113: 110: 108: 104: 103: 98: 95: 92: 88: 84: 80: 77: 74: 70: 67: 64: 62: 58: 53: 50: 47: 40: 33: 19: 3239:electronvolt 3190: 2985: 2966: 2868:. Retrieved 2854: 2842:. Retrieved 2838:the original 2827: 2820: 2811:December 16, 2809:, retrieved 2783: 2773: 2751: 2740: 2730: 2718:. Retrieved 2699: 2689:February 26, 2687:. Retrieved 2682: 2672: 2645: 2641: 2631: 2619:. Retrieved 2601: 2587:Eureka alert 2586: 2580: 2565: 2559: 2547:. Retrieved 2525: 2490: 2486: 2476: 2464:. Retrieved 2459: 2442: 2429: 2423: 2415:the original 2410: 2401: 2388: 2379: 2371:the original 2360: 2348:. Retrieved 2341:the original 2324: 2308: 2303: 2293:February 14, 2291:. Retrieved 2267: 2260: 2248:. Retrieved 2233: 2219: 2210: 2201: 2192: 2180:. Retrieved 2176:the original 2166: 2155: 2114: 2108: 2098: 2092: 2080: 2071: 2062: 2043: 2013: 2007: 1998:December 16, 1996:, retrieved 1970: 1960: 1941: 1935: 1908: 1882:power plants 1871: 1861: 1851: 1844: 1837: 1827: 1798:Power factor 1727: 1716: 1713: 1679: 1660:power rating 1653: 1638: 1614:transmitters 1608: 1575: 1549: 1547:rather than 1539: 1526: 1501:) refers to 1490: 1486: 1474: 1470: 1464: 1404:microseconds 1336: 1332: 1328: 1323: 1318: 1312: 1273:data centers 1269:server farms 1241:transmitters 1060: 952: 947: 939: 934: 924: 919: 911: 906: 896: 891: 883: 878: 868: 863: 855: 850: 840: 835: 827: 822: 723: 719: 715: 711: 706: 694: 686: 682: 680: 671: 653: 639: 635: 495: 415:In terms of 414: 265: 252:steam engine 223:the rate of 205:radiant flux 196: 192: 190: 111: 106: 72:Unit of 49: 46:Joule-second 2834:DONG Energy 2613:: PMODWRC. 2493:(1): 5–24. 2487:Solid Earth 2466:February 9, 2350:27 December 2250:February 8, 1886:solar power 1719:watt-second 1708:10 W·h 1582:volt-ampere 1523:SI prefixes 1372:power grids 1193:hearing aid 1173:calculators 1169:solar cells 1137:sound power 1054:quettawatt 1045:quectowatt 437:volt-ampere 90:Named after 61:Unit system 3349:James Watt 3343:Categories 3033:Base units 2936:Audio help 2927:2023-07-18 2621:October 5, 2432:, London: 2411:Electrabel 2317:3642163017 1900:References 1890:duck curve 1835:. Setting 1671:watt hours 1656:light bulb 1639:The terms 1559:Ørsted A/S 1426:Nova laser 1415:See also: 1400:nanosecond 1293:12 MW 1245:horsepower 1187:A typical 1079:of 1  1048:10 W 1039:10 W 1034:ronnawatt 1028:10 W 1025:rontowatt 1019:10 W 1014:yottawatt 1008:10 W 1005:yoctowatt 999:10 W 994:zettawatt 988:10 W 985:zeptowatt 979:10 W 968:10 W 959:10 W 944:10 W 931:10 W 916:10 W 903:10 W 888:10 W 875:10 W 860:10 W 847:10 W 832:10 W 819:10 W 814:hectowatt 808:10 W 805:centiwatt 799:10 W 788:10 W 779:10 W 771:SI symbol 762:SI symbol 754:Multiples 656:James Watt 441:real power 229:James Watt 94:James Watt 3176:steradian 3091:becquerel 2870:March 27, 2844:March 17, 2535:Livermore 2517:1869-9510 2452:Max Roser 1847:= 9.8 m/s 1813:Wattmeter 1629:main lobe 1622:half-wave 1586:resistive 1563:megajoule 1452:Yottawatt 1183:Milliwatt 1151:Microwatt 1129:acoustics 1087:Femtowatt 965:attowatt 940:femtowatt 856:microwatt 828:milliwatt 794:decawatt 785:deciwatt 734:Multiples 613:) is the 601:Ω 573:Ω 569:⋅ 546:Ω 502:Ohm's law 474:⋅ 392:− 383:⋅ 368:⋅ 335:⋅ 195:(symbol: 153:CGS units 105:1 W 18:Kilowatts 3328:Category 3283:See also 3056:kilogram 3025:SI units 2938: · 2864:Archived 2802:archived 2781:(2006), 2765:Archived 2720:March 4, 2714:Archived 2683:nasa.gov 2615:Archived 2592:archived 2571:archived 2549:June 19, 2543:Archived 2454:(2020). 2393:Archived 2319:, p.153 2284:Archived 2244:Archived 2224:archived 2182:April 9, 2144:(1911). 1989:archived 1968:(2006), 1866:Iwafune. 1840:= 100 kg 1732:See also 1589:circuits 1493:(MWt, MW 1410:Petawatt 1386:Terawatt 1366:Gigawatt 1341:(506:2). 1333:megawatt 1263:Megawatt 1207:Kilowatt 1143:Nanowatt 1123:Picowatt 1113:decibels 1101:FM tuner 1071:Attowatt 974:exawatt 953:petawatt 925:terawatt 912:picowatt 897:gigawatt 884:nanowatt 869:megawatt 841:kilowatt 724:absolute 712:absolute 625:Examples 268:velocity 262:Overview 236:inventor 233:Scottish 221:quantify 161:10  3244:hectare 3229:decibel 3171:sievert 3166:siemens 3096:coulomb 3046:candela 2925: ( 2896:minutes 2650:Bibcode 2495:Bibcode 2154:(ed.). 1658:with a 1552:= 270 W 1545:= 270 W 1533:). The 1465:In the 1338:Science 1303:. U.S. 1229:engines 1177:watches 632:gravity 431:of one 244:chemist 207:in the 141:⋅ 137:⋅ 3259:minute 3219:dalton 3161:radian 3156:pascal 3146:newton 3071:second 3051:kelvin 3041:ampere 2794:  2737:"Watt" 2685:. NASA 2648:(13). 2515:  2315:  2121:  2050:  2020:  1981:  1948:  1645:energy 1327:. The 768:Value 759:Value 676:Ampère 589:where 555:  528:  516:  467:  455:  425:ampere 358:  328:  306:  294:  276:newton 242:, and 217:second 107:in ... 82:Symbol 3274:tonne 3269:neper 3254:litre 3196:weber 3181:tesla 3136:lumen 3131:katal 3126:joule 3121:hertz 3116:henry 3106:farad 3061:metre 2805:(PDF) 2788:(PDF) 2344:(PDF) 2333:(PDF) 2287:(PDF) 2272:(PDF) 2150:. In 1992:(PDF) 1975:(PDF) 1918:(PDF) 1854:= 3 m 1723:joule 1641:power 1477:or MW 1396:Earth 1097:radar 1093:radio 1063:face 774:Name 765:Name 691:1 A × 640:power 213:joule 201:power 76:power 3249:hour 3191:watt 3186:volt 3111:gray 3066:mole 2967:watt 2954:Watt 2872:2009 2846:2014 2813:2021 2792:ISBN 2722:2017 2691:2022 2623:2005 2551:2012 2513:ISSN 2468:2020 2352:2021 2313:ISBN 2295:2013 2252:2010 2184:2018 2119:ISBN 2048:ISBN 2018:ISBN 2000:2021 1979:ISBN 1946:ISBN 1849:and 1717:The 1643:and 1390:The 1175:and 1095:and 1061:bold 791:daW 672:watt 433:volt 280:work 215:per 193:watt 191:The 55:watt 3224:day 3151:ohm 3141:lux 2658:doi 2503:doi 2434:IET 1922:doi 1833:mgh 1664:100 1662:of 1529:(GW 1489:or 1475:MWe 1424:'s 1329:OED 1319:OED 1271:or 1201:dBm 1081:μPa 1051:QW 1042:qW 1031:RW 1022:rW 1011:YW 1002:yW 991:ZW 982:zW 971:EW 962:aW 811:hW 802:cW 782:dW 638:or 617:of 591:ohm 203:or 163:erg 3345:: 2894:14 2832:. 2830:)" 2800:, 2761:US 2759:. 2739:. 2712:. 2708:. 2681:. 2656:. 2646:48 2644:. 2640:. 2611:CH 2609:. 2539:CA 2537:, 2533:. 2511:. 2501:. 2489:. 2485:. 2458:. 2450:; 2387:. 2278:. 2274:. 2218:, 2133:^ 2070:. 2032:^ 1987:, 1842:, 1675:kJ 1651:. 1631:. 1595:. 1573:. 1554:th 1543:th 1499:th 1469:, 1442:ps 1434:ps 1356:A 1109:RF 948:PW 935:fW 920:TW 907:pW 892:GW 879:nW 864:MW 851:μW 836:kW 823:mW 621:. 504:. 258:. 238:, 135:kg 133:1 66:SI 3017:e 3010:t 3003:v 2978:. 2942:) 2934:( 2929:) 2898:) 2891:( 2874:. 2848:. 2745:. 2724:. 2693:. 2666:. 2660:: 2652:: 2625:. 2596:. 2575:. 2553:. 2519:. 2505:: 2497:: 2491:1 2470:. 2437:. 2354:. 2297:. 2254:. 2228:. 2186:. 2127:. 2056:. 2027:. 1954:. 1928:. 1924:: 1892:. 1852:h 1845:g 1838:m 1706:× 1704:1 1666:W 1550:P 1540:P 1531:e 1519:e 1515:t 1495:t 1479:e 1473:( 1406:. 1317:( 1223:. 1216:. 742:. 642:. 593:( 577:, 563:2 559:A 552:1 549:= 542:/ 536:2 532:V 525:1 522:= 519:W 513:1 482:. 478:A 470:V 464:1 461:= 458:W 452:1 401:. 395:3 388:s 377:2 373:m 364:g 361:k 355:1 352:= 349:s 344:/ 339:m 331:N 325:1 322:= 319:s 314:/ 309:J 303:1 300:= 297:W 291:1 197:W 167:s 165:⋅ 143:s 139:m 85:W 41:. 34:. 20:)

Index

Kilowatts
Watt (disambiguation)
Melbourne Workers Theatre
Joule-second
Unit system
SI
power
James Watt
SI base units
kg
m
s
CGS units
erg
s
English Engineering Units
power
radiant flux
International System of Units
joule
second
quantify
energy transfer
James Watt
Scottish
inventor
mechanical engineer
chemist
Newcomen engine
steam engine

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