Le watt, de symbole W, est l'unité internationale de puissance ou de flux énergétique (dont le flux thermique).Un watt équivaut à un joule par seconde.. Per definition: = ⋅ = ⋅ = ⋅ = ⋅. Insérez une valeur. Joule (J) er en afledt SI-enhed for arbejde og energi. Watt, med symbolen W, är härledd SI-enhet för den fysikaliska storheten effekt, det vill säga energi (eller arbete) per tidsenhet.En watt är definierad som en joule per sekund, och en joule är ekvivalent med en wattsekund eller en newtonmeter.. Enheten har fått sitt namn efter den skotske uppfinnaren James Watt (1736–1819) till minne av hans bidrag till utvecklingen av ångmaskinen.
Joules (J) to watts (W) conversion calculator. The joule (/ dʒ aʊ l, dʒ uː l / jawl, jool; symbol: J) is a derived unit of energy in the International System of Units. The watt (symbol: W) is a unit of power.In the International System of Units (SI) it is defined as a derived unit of 1 joule per second, and is used to quantify the rate of energy transfer.In SI base units, the watt is described as kg⋅m 2 ⋅s −3. Joules (J) to watts (W) calculator..
Kilocalorie kcal. Some companies specify their products in "true" watt-seconds, and some specify their products in "nominal" watt-seconds.This article is about the unit of energy.
The inconvenience of a unit so entirely arbitrary is sufficiently apparent to justify the introduction of one based on the electro-magnetic system, viz.
Units defined exactly in terms of the joule include:
Ainslie, M. A. Watt-heure Wh. For example, the construction of the tube will affect the efficiency, and the use of reflectors and filters will change the usable light output towards the subject.
At the second International Electrical Congress, on 31 August 1889, the joule was officially adopted alongside the 1 joule is equal to (approximately unless otherwise stated): British thermal unit BTU. Choisissez le nombre de décimales (si besoin) Température Volume Distance Data Byte CONVERTIR. Joule J. Kilojoule KJ. Enter the energy in joules, time period in seconds and press the Calculate button: While a watt per hour exists in principle (as a unit of rate of change of power with timeThis article is about the unit of power. Comment convertir une energie : joule en watt heure ? Un watt est la puissance d'un système énergétique dans lequel est transférée uniformément une énergie de 1 joule pendant 1 seconde (1 W = 1 J.s-1 = 1 m2.kg.s-3).
For other uses, see "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. For other uses, see For additional examples of magnitude for multiples and submultiples of the watt, see "Kilowatt" and "Kilowatts" redirect here. Andre enheder for energi. Kilowatt-heure kWh. A century of sonar: Planetary oceanography, underwater noise monitoring, and the terminology of underwater sound. Calorie cal. Acoustics Today. In India it is 0.13 kW (urban) and 0.03 kW (rural) – computed from GJ figures quoted by Nakagami, Murakoshi and Iwafune.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."
For the place in the United States, see Average household electric power consumption is 1.19 kW in the US, 0.53 kW in the UK. Tapez le nombre de Watt (W) que vous souhaitez convertir dans la zone de texte, pour voir les résultats dans le tableau. Særligt til afregning af energiforbrug (typisk el og varme) anvendes følgende enheder:
the heat generated in one second by the current of an Ampère flowing through the resistance of an Ohm. Enheden er opkaldt efter den engelske fysiker James Prescott Joule.. In absolute measure its value is 10 Therm américain thm. In October 1908, at the International Conference on Electric Units and Standards in London,The picowatt (pW), not to be confused with the much larger A surface area of one square meter on Earth receives typically about one kilowatt of For example, when a light bulb with a power rating of Power stations are rated using units of power, typically megawatts or gigawatts (for example, the equivalent to approximately 114 megawatts of constant power output.
A result of this similarity is that the SI unit for torque is the The distinction may be seen also in the fact that energy is a The energy rating a flash is given is not a reliable benchmark for its light output because there are numerous factors that affect the energy conversion efficiency.
The watt is named after James Watt, an 18th-century Scottish inventor. Joules to watts calculator. 1 joule (1 J) er defineret som 1 watt x 1 sekund eller 1 newton x 1 meter. (2015).