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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.
650: 1423:, giving a total energy of 600 J. Another example is the Laser for Fast Ignition Experiments (LFEX) at the Institute of Laser Engineering (ILE), 2229: 2901: 2599: 2269: 1715:
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
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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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In October 1908, at the International Conference on Electric Units and Standards in London, so-called
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Loeb, Norman G.; Johnson, Gregory C.; Thorsen, Tyler J.; Lyman, John M.; et al. (15 June 2021).
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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
1489: 1275: 1263: 1222:, tools, machines, and heaters. It is also a common unit used to express the 1175: 654: 262: 2760: 2740:"Solar Energy Grew at a Record Pace in 2008 (excerpt from EERE Network News" 1951: 1907:(Report). Gaithersburg, MD: National Institute of Standards and Technology. 1199:"Kilowatt" and "Kilowatts" redirect here. For the musician James Watts, see 3219: 3176: 3161: 3116: 3096: 3013: 2956: 1784: 1646: 1183: 488: 191: 112: 34: 2254:
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
254: 222: 139: 33:"Joules per second" redirects here, it should not be confused with 2160:. Bureau International des Poids et Mesures (BIPM). Archived from 1614:
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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Lord Kelvin: His Influence on Electrical Measurements and Units
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Bai, Jim; Chen, Aizhu (11 November 2010). Lewis, Chris (ed.).
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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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have been built with power ratings of up to 2 GW.
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appeared in a 28 November 1947 article in the journal
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Powers measured in microwatts are typically stated in
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ACEEE Summer Study on Energy Efficiency in Buildings
1722: 1697:/ (365 days × 24 hours per day) ≈ 114 million watts, 636: 2690:"How Many? A Dictionary of Units of Measurement. M" 1246:) (on a clear day at midday, close to the equator). 487:for watt can be found using the above equation and 1656:is turned on for one hour, the energy used is 100 1262:; and some scientific research equipment, such as 1090:performance figures for sensitivity, quieting and 688:were dominant from 1909 until 1948. After the 9th 651:British Association for the Advancement of Science 592: 568: 473: 392: 241:in 1776. Watt's invention was fundamental for the 2000:Marks' Standard Handbook for Mechanical Engineers 1419:. The duration of the pulse was roughly 0.5  3321: 2325:. 1 August 2007. pp. 84–101. Archived from 665:through the difference of potential of a Volt". 2088:. Vol. 52nd Meeting (1882). April 3, 1883. 2030:The Science of measurement: A historical survey 1712:. One kilowatt hour is 3,600,000 watt seconds. 1230:. One kilowatt is approximately equal to 1.34 1226:power output of broadcast radio and television 2654: 1998:Avallone, Eugene A; et al., eds. (2007), 1899: 1875:generation drops to zero as the sun sets. See 1818:The energy in climbing the stairs is given by 1571:. While these units are equivalent for simple 1298:. The earliest citing of the megawatt in the 641:The watt is named after the Scottish inventor 2990: 2191:Morfey, C.L. (2001). Dictionary of Acoustics. 2098: 172:0.7375621 ft⋅lbf/s = 0.001341022 hp 2762:International Bureau of Weights and Measures 2465: 1953:International Bureau of Weights and Measures 1552:per second for delivered heating power in a 1522:International Bureau of Weights and Measures 1126:when this quantity is expressed in decibels. 474:{\displaystyle \mathrm {1~W=1~V{\cdot }A} .} 3281:Historical definitions of the SI base units 2694:University of North Carolina at Chapel Hill 2466:Davies, J. H.; Davies, D. R. (2010-02-22). 2323:United States Nuclear Regulatory Commission 2122: 2120: 422:(V), meaning the watt is equivalent to the 2997: 2983: 2526:: Lawrence Livermore National Laboratory. 2442:"Global Direct Primary Energy Consumption" 1448:Conventions in the electric power industry 690:General Conference on Weights and Measures 2717: 2645: 2491: 1926: 1294:have net summer capacities between about 1206:"kW" redirects here. For other uses, see 261:against a constant opposing force of one 2912:, and does not reflect subsequent edits. 2895: 2746:: Department of Energy). 25 March 2009. 2448:. Published online at OurWorldInData.org 2117: 2103:. Peter Peregrinus: London. p. 51. 1997: 1900:Newell, David B; Tiesinga, Eite (2019). 1622:Distinction between watts and watt-hours 1492:produced by the plant. For example, the 1331: 2350: 2158:"Resolution 12 of the 11th CGPM (1960)" 2126: 2023: 2021: 2019: 3322: 2963: 2767:The International System of Units (SI) 2530:from the original on 15 September 2012 2046: 1958:The International System of Units (SI) 1902:The international system of units (SI) 1660:(W·h), 0.1 kilowatt hour, or 360  1270:typically have a peak power output of 2978: 2750:from the original on 18 October 2011. 2027: 1585: 1166:are typically measured in microwatts. 740: 737: 2660: 2381:from the original on 24 August 2010. 2016: 1805: 1603:in units of watts, referring to the 1274:, while some produce much more. The 2964:Nelson, Robert A. (February 2000). 2687: 2584: 2275:from the original on 9 January 2015 1964:(8th ed.), pp. 118, 144, 1365:has a peak output of 1.04 GW. 1234:. A small electric heater with one 1086:receivers. For example, meaningful 410:is performed when a current of one 13: 2954: 2882: 1771:(formerly known as a watt balance) 1708:is a unit of energy, equal to the 1607:. This refers to the power that a 1599:usually report the power of their 1345:United States Department of Energy 587: 559: 545: 532: 518: 505: 464: 456: 444: 374: 359: 350: 347: 335: 325: 317: 305: 295: 283: 14: 3351: 2957:"History of the electrical units" 2863: 2843:. Northern Arizona Wind and Sun. 2516:"Crossing the Petawatt threshold" 2355:. Peking: Reuters. Archived from 2232:from the original on 3 March 2011 1578:, they differ when loads exhibit 637:Origin and adoption as an SI unit 3304: 3303: 2940: 2928: 2894: 2032:. New York: Dover. p. 239. 1753: 1739: 1725: 1512:are sometimes used, for example 1238:can use 1 kilowatt. The average 1070:is approximately 0.65 aW/m. 645:. The unit name was proposed by 406:, one watt is the rate at which 214:. The watt is named in honor of 206:or 1 kg⋅m⋅s. It is used to 2847:from the original on 1 May 2009 2833: 2800: 2790:from the original on 2021-06-04 2754: 2732: 2711: 2700:from the original on 2011-09-04 2681: 2613: 2602:from the original on 2011-08-30 2579:from the original on 2015-08-08 2575:(publicity release), Aug 2015, 2563: 2558:from the original on 2015-08-22 2554:, IFL Science, 12 August 2015, 2542: 2508: 2459: 2426: 2407: 2385: 2363: 2344: 2308: 2287: 2244: 2217: 2212:from the original on 2017-03-21 2194: 2185: 2176: 2150: 2092: 2054:"Address by C. William Siemens" 2028:Klein, Herbert Arthur (1988) . 1981:from the original on 2021-06-04 1856: 1846: 1472:produced by a generator, while 414:(A) flows across an electrical 3291:System of units of measurement 2076: 2064: 1991: 1945: 1920: 1893: 1812: 1468:) refers by convention to the 1438: 1278:, for example, uses more than 1190:, referenced to one milliwatt. 1182:uses less than one milliwatt. 1169: 1137: 1073: 1: 2970:. Via Satellite. ATI courses. 2945:The dictionary definition of 2773:(8th ed.), p. 132, 1886: 1862:Watts per hour refers to the 1396: 1372: 1352: 1308:) is a reference in the 1900 1249: 1193: 1129: 1109: 1057: 715:International System of Units 218:(1736–1819), an 18th-century 196:International System of Units 3004: 2626:Geophysical Research Letters 1931:. Elsevier. pp. 12–13. 1775:Nominal power (photovoltaic) 1684:Power output = energy / time 720: 717:(SI) as the unit of power. 7: 2468:"Earth's surface heat flux" 1718: 1689:1 terawatt hour per year = 1494:Embalse nuclear power plant 1417:chirped pulse amplification 1284:diesel-electric locomotives 727:Orders of magnitude (power) 653:. Noting that units in the 611: 430:of an electrical circuit). 248: 10: 3356: 1795:Wattage conversion factors 1589: 1508:(i.e. electricity). Other 1401: 1363:Doel Nuclear Power Station 1347:video explaining gigawatts 1286:typically produce and use 1240:electric power consumption 1205: 1198: 724: 32: 25: 18: 3299: 3263: 3185: 3060: 3012: 2371:"Not on my beach, please" 2266:Pacific Grove, California 1500:to generate 2,109 MW 1301:Oxford English Dictionary 1045: 760: 757: 754: 751: 748: 745: 733:SI multiples of watt (W) 655:practical system of units 165:English Engineering Units 160: 135: 108: 104: 86: 76: 68: 58: 46: 41: 28:Melbourne Workers Theatre 3245:minute and second of arc 2808:"Avedøre Power Station ( 1913:10.6028/nist.sp.330-2019 1605:effective radiated power 1592:Effective radiated power 1433:Earth's energy imbalance 1046:Common multiples are in 257:is held constant at one 16:SI derived unit of power 3286:2019 revision of the SI 2395:[Key numbers]. 2143:Encyclopædia Britannica 2133:"Units, Physical"  1554:combined heat and power 1454:electric power industry 1404:List of petawatt lasers 1144:medical instrumentation 593:{\displaystyle \Omega } 2890: 2870:Listen to this article 2718:Cleveland, CJ (2007). 2099:Tunbridge, P. (1992). 1348: 1118:and in the science of 594: 570: 475: 394: 2889: 2725:Encyclopedia of Earth 2359:on November 21, 2020. 2228:. Datasheet Archive. 2128:Fleming, John Ambrose 2072:"Siemens, 1883, p. 6" 1558:Avedøre Power Station 1342: 1148:electroencephalograph 686:"international units" 606:electrical resistance 595: 571: 476: 395: 269:is done is one watt. 243:Industrial Revolution 21:Watt (disambiguation) 3187:Other accepted units 2937:at Wikimedia Commons 2921:More spoken articles 2841:"Inverter Selection" 2647:10.1029/2021GL093047 2293:Elena Papadopoulou, 1641:For example, when a 1580:electrical reactance 1496:in Argentina uses a 1296:500 and 1300 MW 1292:nuclear power plants 1268:electric locomotives 1201:KiloWatts (musician) 1158:for devices such as 1146:systems such as the 701:watt = 1.00019 584: 495: 434: 416:potential difference 273: 265:, the rate at which 3271:Conversion of units 2661:Williams, David R. 2638:2021GeoRL..4893047L 2493:10.5194/se-1-5-2010 2484:2010SolE....1....5D 2332:on 16 February 2008 1780:One Watt Initiative 1565:alternating current 1514:gigawatt electrical 1458:megawatt electrical 1208:kW (disambiguation) 734: 227:mechanical engineer 99:... is equal to ... 3064:with special names 2891: 2377:. 19 August 2010. 2206:The New York Times 1747:Engineering portal 1586:Radio transmission 1409:Lawrence Livermore 1349: 1152:electrocardiograph 732: 676:watt. (Also used: 647:C. William Siemens 623:rate of doing work 590: 566: 471: 390: 170:    162:    145:    137:    118:    110:    3317: 3316: 3195:astronomical unit 2933:Media related to 2887: 2446:Our World in Data 2164:on April 20, 2020 2009:978-0-07-142867-5 1806:Explanatory notes 1340: 1318:also states that 1218:and the power of 1094:require that the 1054: 1053: 543: 516: 504: 455: 443: 346: 316: 294: 282: 253:When an object's 233:who improved the 198:(SI), equal to 1 186:) is the unit of 176: 175: 87:Conversions 3347: 3335:SI derived units 3307: 3306: 2999: 2992: 2985: 2976: 2975: 2971: 2960: 2955:Borvon, Gérard. 2944: 2932: 2911: 2909: 2898: 2897: 2888: 2878: 2876: 2871: 2857: 2856: 2854: 2852: 2837: 2831: 2830: 2828: 2827: 2818:. Archived from 2804: 2798: 2797: 2796: 2795: 2789: 2772: 2758: 2752: 2751: 2736: 2730: 2729: 2715: 2709: 2708: 2706: 2705: 2685: 2679: 2678: 2676: 2674: 2663:"Sun Fact Sheet" 2658: 2652: 2651: 2649: 2617: 2611: 2610: 2608: 2607: 2588: 2582: 2580: 2567: 2561: 2559: 2546: 2540: 2539: 2537: 2535: 2512: 2506: 2505: 2495: 2463: 2457: 2456: 2454: 2453: 2430: 2424: 2422: 2411: 2405: 2404: 2389: 2383: 2382: 2367: 2361: 2360: 2348: 2342: 2341: 2339: 2337: 2331: 2320: 2312: 2306: 2297:, Springer 2011 2291: 2285: 2284: 2282: 2280: 2274: 2259: 2248: 2242: 2241: 2239: 2237: 2221: 2215: 2213: 2208:, Jul 18, 2010, 2198: 2192: 2189: 2183: 2180: 2174: 2173: 2171: 2169: 2154: 2148: 2147: 2135: 2124: 2115: 2114: 2096: 2090: 2089: 2080: 2074: 2068: 2062: 2061: 2050: 2044: 2043: 2025: 2014: 2012: 1995: 1989: 1988: 1987: 1986: 1980: 1963: 1949: 1943: 1942: 1924: 1918: 1917:§2.3.4, Table 4. 1916: 1906: 1897: 1880: 1860: 1854: 1850: 1844: 1842: 1835: 1828: 1821: 1816: 1763: 1758: 1757: 1749: 1744: 1743: 1735: 1730: 1729: 1696: 1694: 1672:Three Gorges Dam 1655: 1654: 1563:When describing 1556:station such as 1543: 1533: 1478:thermal megawatt 1474:megawatt thermal 1440: 1425:Osaka University 1398: 1374: 1354: 1341: 1297: 1289: 1281: 1273: 1251: 1244:solar irradiance 1195: 1171: 1139: 1131: 1111: 1075: 1059: 735: 731: 682:practical system 679: 599: 597: 596: 591: 575: 573: 572: 567: 562: 558: 553: 552: 541: 531: 526: 525: 514: 502: 485:unit conversions 480: 478: 477: 472: 467: 463: 453: 441: 404:electromagnetism 399: 397: 396: 391: 386: 385: 384: 372: 367: 366: 357: 344: 334: 333: 324: 314: 304: 303: 292: 280: 259:meter per second 171: 163: 156: 146: 138: 119: 111: 39: 38: 3355: 3354: 3350: 3349: 3348: 3346: 3345: 3344: 3320: 3319: 3318: 3313: 3295: 3276:Metric prefixes 3259: 3181: 3063: 3056: 3008: 3003: 2925: 2924: 2913: 2907: 2905: 2902:This audio file 2899: 2892: 2883: 2880: 2874: 2873: 2869: 2866: 2861: 2860: 2850: 2848: 2839: 2838: 2834: 2825: 2823: 2806: 2805: 2801: 2793: 2791: 2787: 2781: 2770: 2759: 2755: 2738: 2737: 2733: 2716: 2712: 2703: 2701: 2688:Rowlett, Russ. 2686: 2682: 2672: 2670: 2659: 2655: 2618: 2614: 2605: 2603: 2590: 2589: 2585: 2569: 2568: 2564: 2548: 2547: 2543: 2533: 2531: 2514: 2513: 2509: 2464: 2460: 2451: 2449: 2431: 2427: 2412: 2408: 2393:"Chiffres clés" 2391: 2390: 2386: 2369: 2368: 2364: 2349: 2345: 2335: 2333: 2329: 2318: 2314: 2313: 2309: 2292: 2288: 2278: 2276: 2272: 2257: 2249: 2245: 2235: 2233: 2222: 2218: 2200: 2199: 2195: 2190: 2186: 2181: 2177: 2167: 2165: 2156: 2155: 2151: 2125: 2118: 2111: 2097: 2093: 2082: 2081: 2077: 2069: 2065: 2052: 2051: 2047: 2040: 2026: 2017: 2010: 1996: 1992: 1984: 1982: 1978: 1972: 1961: 1950: 1946: 1939: 1925: 1921: 1904: 1898: 1894: 1889: 1884: 1883: 1861: 1857: 1851: 1847: 1837: 1830: 1823: 1819: 1817: 1813: 1808: 1759: 1752: 1745: 1738: 1731: 1724: 1721: 1692: 1690: 1652: 1650: 1624: 1594: 1588: 1542: 1535: 1531: 1525: 1519: 1507: 1503: 1498:fission reactor 1487: 1483: 1467: 1450: 1406: 1367:HVDC converters 1332: 1295: 1288:3 and 5 MW 1287: 1279: 1271: 1236:heating element 1224:electromagnetic 1220:electric motors 1211: 1204: 1120:radio astronomy 1104:input impedance 1092:signal-to-noise 730: 723: 677: 639: 614: 602:SI derived unit 585: 582: 581: 554: 548: 544: 527: 521: 517: 498: 496: 493: 492: 483:Two additional 459: 437: 435: 432: 431: 408:electrical work 377: 373: 368: 362: 358: 353: 329: 328: 320: 299: 298: 276: 274: 271: 270: 251: 235:Newcomen engine 212:energy transfer 169: 161: 147: 144: 136: 117: 109: 37: 31: 24: 17: 12: 11: 5: 3353: 3343: 3342: 3340:Units of power 3337: 3332: 3315: 3314: 3312: 3311: 3300: 3297: 3296: 3294: 3293: 3288: 3283: 3278: 3273: 3267: 3265: 3261: 3260: 3258: 3257: 3252: 3247: 3242: 3237: 3232: 3227: 3222: 3217: 3212: 3207: 3202: 3197: 3191: 3189: 3183: 3182: 3180: 3179: 3174: 3169: 3164: 3159: 3154: 3149: 3144: 3139: 3134: 3129: 3124: 3119: 3114: 3109: 3104: 3099: 3094: 3089: 3084: 3082:degree Celsius 3079: 3074: 3068: 3066: 3062:Derived units 3058: 3057: 3055: 3054: 3049: 3044: 3039: 3034: 3029: 3024: 3018: 3016: 3010: 3009: 3002: 3001: 2994: 2987: 2979: 2973: 2972: 2961: 2952: 2938: 2914: 2900: 2893: 2881: 2868: 2867: 2865: 2864:External links 2862: 2859: 2858: 2832: 2810:Avedøre værket 2799: 2779: 2753: 2731: 2710: 2680: 2653: 2612: 2583: 2562: 2541: 2507: 2458: 2434:Hannah Ritchie 2425: 2406: 2403:on 2011-07-10. 2384: 2362: 2343: 2307: 2286: 2243: 2216: 2193: 2184: 2175: 2149: 2138:Chisholm, Hugh 2116: 2109: 2091: 2075: 2063: 2045: 2038: 2015: 2008: 1990: 1970: 1944: 1937: 1919: 1891: 1890: 1888: 1885: 1882: 1881: 1865: 1864:rate of change 1855: 1845: 1810: 1809: 1807: 1804: 1803: 1802: 1797: 1792: 1790:Solar constant 1787: 1782: 1777: 1772: 1769:Kibble balance 1765: 1764: 1761:Physics portal 1750: 1736: 1720: 1717: 1699: 1698: 1686: 1685: 1677:terawatt hours 1668:Power stations 1637: 1623: 1620: 1612:dipole antenna 1597:Radio stations 1590:Main article: 1587: 1584: 1540: 1529: 1517: 1505: 1501: 1485: 1481: 1470:electric power 1465: 1449: 1446: 1445: 1444: 1441: 1436: 1399: 1394: 1379:primary energy 1375: 1370: 1355: 1330: 1329: 1282:, while heavy 1272:5 or 6 MW 1264:supercolliders 1252: 1247: 1197: 1196: 1191: 1172: 1167: 1150:(EEG) and the 1140: 1135: 1132: 1127: 1112: 1107: 1076: 1071: 1064:sound pressure 1060: 1052: 1051: 1043: 1042: 1039: 1036: 1033: 1030: 1027: 1023: 1022: 1019: 1016: 1013: 1010: 1007: 1003: 1002: 999: 996: 993: 990: 987: 983: 982: 979: 976: 973: 970: 967: 963: 962: 959: 956: 953: 950: 947: 943: 942: 937: 932: 929: 924: 919: 915: 914: 909: 904: 901: 896: 891: 887: 886: 881: 876: 873: 868: 863: 859: 858: 853: 848: 845: 840: 835: 831: 830: 825: 820: 817: 812: 807: 803: 802: 799: 796: 793: 790: 787: 783: 782: 779: 776: 773: 770: 767: 763: 762: 759: 756: 753: 750: 747: 743: 742: 739: 722: 719: 713:watt into the 684:of units. The 638: 635: 634: 633: 630: 613: 610: 589: 565: 561: 557: 551: 547: 540: 537: 534: 530: 524: 520: 513: 510: 507: 501: 470: 466: 462: 458: 452: 449: 446: 440: 389: 383: 380: 376: 371: 365: 361: 356: 352: 349: 343: 340: 337: 332: 327: 323: 319: 313: 310: 307: 302: 297: 291: 288: 285: 279: 250: 247: 174: 173: 167: 158: 157: 142: 133: 132: 115: 106: 105: 102: 101: 96: 89: 88: 84: 83: 78: 74: 73: 70: 66: 65: 60: 56: 55: 50: 44: 43: 15: 9: 6: 4: 3: 2: 3352: 3341: 3338: 3336: 3333: 3331: 3328: 3327: 3325: 3310: 3302: 3301: 3298: 3292: 3289: 3287: 3284: 3282: 3279: 3277: 3274: 3272: 3269: 3268: 3266: 3262: 3256: 3253: 3251: 3248: 3246: 3243: 3241: 3238: 3236: 3233: 3231: 3228: 3226: 3223: 3221: 3218: 3216: 3215:degree of arc 3213: 3211: 3208: 3206: 3203: 3201: 3198: 3196: 3193: 3192: 3190: 3188: 3184: 3178: 3175: 3173: 3170: 3168: 3165: 3163: 3160: 3158: 3155: 3153: 3150: 3148: 3145: 3143: 3140: 3138: 3135: 3133: 3130: 3128: 3125: 3123: 3120: 3118: 3115: 3113: 3110: 3108: 3105: 3103: 3100: 3098: 3095: 3093: 3090: 3088: 3085: 3083: 3080: 3078: 3075: 3073: 3070: 3069: 3067: 3065: 3059: 3053: 3050: 3048: 3045: 3043: 3040: 3038: 3035: 3033: 3030: 3028: 3025: 3023: 3020: 3019: 3017: 3015: 3011: 3007: 3000: 2995: 2993: 2988: 2986: 2981: 2980: 2977: 2969: 2968: 2962: 2958: 2953: 2951:at Wiktionary 2950: 2949: 2943: 2939: 2936: 2931: 2927: 2926: 2922: 2918: 2903: 2846: 2842: 2836: 2822:on 2014-03-17 2821: 2817: 2813: 2811: 2803: 2786: 2782: 2780:92-822-2213-6 2776: 2769: 2768: 2763: 2757: 2749: 2745: 2741: 2735: 2727: 2726: 2721: 2714: 2699: 2695: 2691: 2684: 2668: 2664: 2657: 2648: 2643: 2639: 2635: 2631: 2627: 2623: 2616: 2601: 2597: 2593: 2587: 2578: 2574: 2573: 2566: 2557: 2553: 2552: 2545: 2529: 2525: 2521: 2517: 2511: 2503: 2499: 2494: 2489: 2485: 2481: 2477: 2473: 2469: 2462: 2447: 2443: 2439: 2435: 2429: 2421: 2417: 2410: 2402: 2398: 2394: 2388: 2380: 2376: 2375:The Economist 2372: 2366: 2358: 2354: 2347: 2328: 2324: 2317: 2311: 2304: 2300: 2296: 2290: 2271: 2267: 2263: 2256: 2255: 2247: 2231: 2227: 2220: 2211: 2207: 2203: 2197: 2188: 2179: 2163: 2159: 2153: 2145: 2144: 2139: 2134: 2129: 2123: 2121: 2112: 2110:0-86341-237-8 2106: 2102: 2095: 2087: 2086: 2079: 2073: 2067: 2059: 2055: 2049: 2041: 2039:9780486144979 2035: 2031: 2024: 2022: 2020: 2011: 2005: 2001: 1994: 1977: 1973: 1971:92-822-2213-6 1967: 1960: 1959: 1954: 1948: 1940: 1938:9780128149256 1934: 1930: 1923: 1914: 1910: 1903: 1896: 1892: 1878: 1874: 1870: 1863: 1859: 1849: 1840: 1833: 1826: 1815: 1811: 1801: 1798: 1796: 1793: 1791: 1788: 1786: 1783: 1781: 1778: 1776: 1773: 1770: 1767: 1766: 1762: 1756: 1751: 1748: 1742: 1737: 1734: 1733:Energy portal 1728: 1723: 1716: 1713: 1711: 1707: 1702: 1688: 1687: 1683: 1682: 1681: 1678: 1675:expressed as 1673: 1669: 1665: 1663: 1659: 1648: 1644: 1639: 1636:per unit time 1635: 1633: 1629: 1619: 1617: 1613: 1610: 1606: 1602: 1598: 1593: 1583: 1581: 1577: 1574: 1570: 1566: 1561: 1559: 1555: 1551: 1547: 1538: 1528: 1523: 1515: 1511: 1499: 1495: 1491: 1490:thermal power 1484:, or MWth, MW 1479: 1475: 1471: 1463: 1459: 1455: 1442: 1437: 1434: 1430: 1426: 1422: 1418: 1414: 1410: 1405: 1400: 1395: 1392: 1388: 1384: 1380: 1376: 1371: 1368: 1364: 1360: 1356: 1351: 1350: 1346: 1327: 1326: 1321: 1317: 1313: 1312: 1307: 1303: 1302: 1293: 1285: 1277: 1276:Eurostar e300 1269: 1265: 1261: 1257: 1253: 1248: 1245: 1241: 1237: 1233: 1229: 1225: 1221: 1217: 1213: 1212: 1209: 1202: 1192: 1189: 1185: 1184:Audio signals 1181: 1177: 1176:laser pointer 1173: 1168: 1165: 1161: 1157: 1153: 1149: 1145: 1141: 1136: 1133: 1128: 1125: 1121: 1117: 1113: 1108: 1106:of the tuner. 1105: 1101: 1097: 1093: 1089: 1085: 1081: 1077: 1072: 1069: 1065: 1061: 1056: 1055: 1049: 1044: 1040: 1037: 1034: 1031: 1028: 1025: 1024: 1020: 1017: 1014: 1011: 1008: 1005: 1004: 1000: 997: 994: 991: 988: 985: 984: 980: 977: 974: 971: 968: 965: 964: 960: 957: 954: 951: 948: 945: 944: 941: 938: 936: 933: 930: 928: 925: 923: 920: 917: 916: 913: 910: 908: 905: 902: 900: 897: 895: 892: 889: 888: 885: 882: 880: 877: 874: 872: 869: 867: 864: 861: 860: 857: 854: 852: 849: 846: 844: 841: 839: 836: 833: 832: 829: 826: 824: 821: 818: 816: 813: 811: 808: 805: 804: 800: 797: 794: 791: 788: 785: 784: 780: 777: 774: 771: 768: 765: 764: 744: 738:Submultiples 736: 728: 718: 716: 712: 708: 707:international 704: 703:international 700: 695: 694:international 692:in 1948, the 691: 687: 683: 675: 674:international 671: 670:international 666: 664: 660: 656: 652: 648: 644: 631: 628: 624: 620: 616: 615: 609: 607: 603: 579: 563: 555: 549: 538: 535: 528: 522: 511: 508: 499: 490: 486: 481: 468: 460: 450: 447: 438: 429: 425: 421: 417: 413: 409: 405: 400: 387: 381: 378: 369: 363: 354: 341: 338: 330: 321: 311: 308: 300: 289: 286: 277: 268: 264: 260: 256: 246: 244: 240: 237:with his own 236: 232: 228: 224: 221: 217: 213: 209: 205: 201: 197: 193: 189: 185: 181: 168: 166: 159: 155: 151: 143: 141: 134: 131: 127: 123: 116: 114: 113:SI base units 107: 103: 100: 97: 95: 91: 90: 85: 82: 79: 75: 71: 67: 64: 61: 57: 54: 51: 49: 45: 40: 36: 29: 22: 3220:electronvolt 3171: 2966: 2947: 2849:. Retrieved 2835: 2824:. Retrieved 2820:the original 2809: 2802: 2792:, retrieved 2766: 2756: 2734: 2723: 2713: 2702:. Retrieved 2683: 2671:. Retrieved 2666: 2656: 2629: 2625: 2615: 2604:. Retrieved 2586: 2572:Eureka alert 2571: 2565: 2550: 2544: 2532:. Retrieved 2510: 2475: 2471: 2461: 2450:. Retrieved 2445: 2428: 2415: 2409: 2401:the original 2396: 2387: 2374: 2365: 2357:the original 2346: 2334:. Retrieved 2327:the original 2310: 2294: 2289: 2277:. Retrieved 2253: 2246: 2234:. Retrieved 2219: 2205: 2196: 2187: 2178: 2166:. Retrieved 2162:the original 2152: 2141: 2100: 2094: 2084: 2078: 2066: 2057: 2048: 2029: 1999: 1993: 1983:, retrieved 1957: 1947: 1928: 1922: 1895: 1869:power plants 1858: 1848: 1838: 1831: 1824: 1814: 1785:Power factor 1714: 1703: 1700: 1666: 1647:power rating 1640: 1625: 1601:transmitters 1595: 1562: 1536: 1534:rather than 1526: 1513: 1488:) refers to 1477: 1473: 1461: 1457: 1451: 1391:microseconds 1323: 1319: 1315: 1310: 1305: 1299: 1260:data centers 1256:server farms 1228:transmitters 1047: 939: 934: 926: 921: 911: 906: 898: 893: 883: 878: 870: 865: 855: 850: 842: 837: 827: 822: 814: 809: 710: 706: 702: 698: 693: 681: 673: 669: 667: 658: 640: 626: 622: 482: 402:In terms of 401: 252: 239:steam engine 210:the rate of 192:radiant flux 183: 179: 177: 98: 93: 59:Unit of 35:Joule-second 2816:DONG Energy 2673:26 February 2598:: PMODWRC. 2478:(1): 5–24. 2472:Solid Earth 2336:27 December 2279:14 February 1873:solar power 1706:watt-second 1695:10 W·h 1569:volt-ampere 1510:SI prefixes 1359:power grids 1180:hearing aid 1160:calculators 1156:solar cells 1124:sound power 1041:quettawatt 1032:quectowatt 424:volt-ampere 77:Named after 48:Unit system 3330:James Watt 3324:Categories 3014:Base units 2917:Audio help 2908:2023-07-18 2826:2014-03-17 2794:2021-12-16 2704:2017-03-04 2606:2005-10-05 2452:2020-02-09 2418:, London: 2397:Electrabel 2303:3642163017 2236:8 February 1985:2021-12-16 1887:References 1877:duck curve 1822:. Setting 1658:watt hours 1643:light bulb 1626:The terms 1546:Ørsted A/S 1413:Nova laser 1402:See also: 1387:nanosecond 1280:12 MW 1232:horsepower 1174:A typical 1066:of 1  1035:10 W 1026:10 W 1021:ronnawatt 1015:10 W 1012:rontowatt 1006:10 W 1001:yottawatt 995:10 W 992:yoctowatt 986:10 W 981:zettawatt 975:10 W 972:zeptowatt 966:10 W 955:10 W 946:10 W 931:10 W 918:10 W 903:10 W 890:10 W 875:10 W 862:10 W 847:10 W 834:10 W 819:10 W 806:10 W 801:hectowatt 795:10 W 792:centiwatt 786:10 W 775:10 W 766:10 W 758:SI symbol 749:SI symbol 741:Multiples 643:James Watt 428:real power 216:James Watt 81:James Watt 3157:steradian 3072:becquerel 2520:Livermore 2502:1869-9510 2438:Max Roser 1834:= 9.8 m/s 1800:Wattmeter 1616:main lobe 1609:half-wave 1573:resistive 1550:megajoule 1439:Yottawatt 1170:Milliwatt 1138:Microwatt 1116:acoustics 1074:Femtowatt 952:attowatt 927:femtowatt 843:microwatt 815:milliwatt 781:decawatt 772:deciwatt 721:Multiples 600:) is the 588:Ω 560:Ω 556:⋅ 533:Ω 489:Ohm's law 461:⋅ 379:− 370:⋅ 355:⋅ 322:⋅ 182:(symbol: 140:CGS units 92:1 W 3309:Category 3264:See also 3037:kilogram 3006:SI units 2919: · 2851:27 March 2845:Archived 2785:archived 2764:(2006), 2748:Archived 2698:Archived 2667:nasa.gov 2600:Archived 2577:archived 2556:archived 2528:Archived 2440:(2020). 2379:Archived 2305:, p.153 2270:Archived 2230:Archived 2210:archived 2130:(1911). 1976:archived 1955:(2006), 1853:Iwafune. 1827:= 100 kg 1719:See also 1576:circuits 1480:(MWt, MW 1397:Petawatt 1373:Terawatt 1353:Gigawatt 1328:(506:2). 1320:megawatt 1250:Megawatt 1194:Kilowatt 1130:Nanowatt 1110:Picowatt 1100:decibels 1088:FM tuner 1058:Attowatt 961:exawatt 940:petawatt 912:terawatt 899:picowatt 884:gigawatt 871:nanowatt 856:megawatt 828:kilowatt 711:absolute 699:absolute 612:Examples 255:velocity 249:Overview 223:inventor 220:Scottish 208:quantify 148:10  3225:hectare 3210:decibel 3152:sievert 3147:siemens 3077:coulomb 3027:candela 2906: ( 2877:minutes 2634:Bibcode 2534:19 June 2480:Bibcode 2168:9 April 2140:(ed.). 1645:with a 1539:= 270 W 1532:= 270 W 1520:). The 1452:In the 1325:Science 1290:. U.S. 1216:engines 1164:watches 619:gravity 418:of one 231:chemist 194:in the 128:⋅ 124:⋅ 3240:minute 3200:dalton 3142:radian 3137:pascal 3127:newton 3052:second 3032:kelvin 3022:ampere 2777:  2720:"Watt" 2669:. NASA 2632:(13). 2500:  2301:  2107:  2036:  2006:  1968:  1935:  1632:energy 1314:. The 755:Value 746:Value 663:Ampère 576:where 542:  515:  503:  454:  442:  412:ampere 345:  315:  293:  281:  263:newton 229:, and 204:second 94:in ... 69:Symbol 3255:tonne 3250:neper 3235:litre 3177:weber 3162:tesla 3117:lumen 3112:katal 3107:joule 3102:hertz 3097:henry 3087:farad 3042:metre 2788:(PDF) 2771:(PDF) 2330:(PDF) 2319:(PDF) 2273:(PDF) 2258:(PDF) 2136:. In 1979:(PDF) 1962:(PDF) 1905:(PDF) 1841:= 3 m 1710:joule 1628:power 1464:or MW 1383:Earth 1084:radar 1080:radio 1050:face 761:Name 752:Name 678:1 A × 627:power 200:joule 188:power 63:power 3230:hour 3172:watt 3167:volt 3092:gray 3047:mole 2948:watt 2935:Watt 2853:2009 2775:ISBN 2675:2022 2536:2012 2498:ISSN 2338:2021 2299:ISBN 2281:2013 2238:2010 2170:2018 2105:ISBN 2034:ISBN 2004:ISBN 1966:ISBN 1933:ISBN 1836:and 1704:The 1630:and 1377:The 1162:and 1082:and 1048:bold 778:daW 659:watt 420:volt 267:work 202:per 180:watt 178:The 42:watt 3205:day 3132:ohm 3122:lux 2642:doi 2488:doi 2420:IET 1909:doi 1820:mgh 1651:100 1649:of 1516:(GW 1476:or 1462:MWe 1411:'s 1316:OED 1306:OED 1258:or 1188:dBm 1068:μPa 1038:QW 1029:qW 1018:RW 1009:rW 998:YW 989:yW 978:ZW 969:zW 958:EW 949:aW 798:hW 789:cW 769:dW 625:or 604:of 578:ohm 190:or 150:erg 3326:: 2875:14 2814:. 2812:)" 2783:, 2744:US 2742:. 2722:. 2696:. 2692:. 2665:. 2640:. 2630:48 2628:. 2624:. 2596:CH 2594:. 2524:CA 2522:, 2518:. 2496:. 2486:. 2474:. 2470:. 2444:. 2436:; 2373:. 2264:. 2260:. 2204:, 2119:^ 2056:. 2018:^ 1974:, 1829:, 1662:kJ 1638:. 1618:. 1582:. 1560:. 1541:th 1530:th 1486:th 1456:, 1429:ps 1421:ps 1343:A 1096:RF 935:PW 922:fW 907:TW 894:pW 879:GW 866:nW 851:MW 838:μW 823:kW 810:mW 608:. 491:. 245:. 225:, 122:kg 120:1 53:SI 2998:e 2991:t 2984:v 2959:. 2923:) 2915:( 2910:) 2879:) 2872:( 2855:. 2829:. 2728:. 2707:. 2677:. 2650:. 2644:: 2636:: 2609:. 2581:. 2560:. 2538:. 2504:. 2490:: 2482:: 2476:1 2455:. 2423:. 2340:. 2283:. 2240:. 2214:. 2172:. 2113:. 2042:. 2013:. 1941:. 1915:. 1911:: 1879:. 1839:h 1832:g 1825:m 1693:× 1691:1 1653:W 1537:P 1527:P 1518:e 1506:e 1502:t 1482:t 1466:e 1460:( 1393:. 1304:( 1210:. 1203:. 729:. 629:. 580:( 564:, 550:2 546:A 539:1 536:= 529:/ 523:2 519:V 512:1 509:= 506:W 500:1 469:. 465:A 457:V 451:1 448:= 445:W 439:1 388:. 382:3 375:s 364:2 360:m 351:g 348:k 342:1 339:= 336:s 331:/ 326:m 318:N 312:1 309:= 306:s 301:/ 296:J 290:1 287:= 284:W 278:1 184:W 154:s 152:⋅ 130:s 126:m 72:W 30:. 23:.

Index

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
Industrial Revolution

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