watt

(W)
   the SI unit of power. Power is the rate at which work is done, or (equivalently) the rate at which energy is expended. One watt is equal to a power rate of one joule of work per second of time. This unit is used both in mechanics and in electricity, so it links the mechanical and electrical units to one another. In mechanical terms, one watt equals about 0.001 341 02 horsepower (hp) or 0.737 562 foot-pound per second (lbf/s). In electrical terms, one watt is the power produced by a current of one ampere flowing through an electric potential of one volt. The name of the unit honors James Watt (1736-1819), the British engineer whose improvements to the steam engine are often credited with igniting the Industrial Revolution.

Dictionary of units of measurement. 2015.

Look at other dictionaries:

  • watt — watt …   Dictionnaire des rimes

  • watt — [ wat ] n. m. • 1881; du nom de l ingénieur J. Watt ♦ Unité de mesure de puissance mécanique ou électrique, de flux thermique et de flux d énergie rayonnante (symb. W), équivalant à un transfert d énergie de 1 joule en 1 seconde. ⇒aussi kilowatt …   Encyclopédie Universelle

  • Watt — steht für: Watt (Einheit), eine physikalische Einheit, benannt nach James Watt Watt (Küste), den Bereich eines Wattenmeeres, der bei Niedrigwasser trockenliegt Watt (Bodentyp); den Bodentyp der Wattflächen in der Deutschen Bodensystematik Watt… …   Deutsch Wikipedia

  • Watt's — S.A. es una empresa de alimentos y lácteos de Chile. Muy famosa por sus conocidos néctar y mermelada. También posee las marcas lácteas Loncoleche y Calo,es muy reconocida por su calidad. Contenido 1 Cronología 2 Negocios 3 Empresas Relacionadas …   Wikipedia Español

  • WATT (J.) — WATT JAMES (1736 1819) Ingénieur et mécanicien écossais, né à Greenock et mort à Heathfield, près de Birmingham. Responsable, à l’université de Glasgow, de l’entretien des instruments de physique, Watt a l’occasion de réparer, en 1764, une pompe… …   Encyclopédie Universelle

  • watt — WATT, waţi, s.m. (fiz.) Unitate de măsură a puterii egală cu puterea care corespunde schimbului de energie sau lucrului mecanic de un joule într o secundă. – Din fr., engl. watt. Trimis de cata, 27.02.2002. Sursa: DEX 98  WATT s. (fiz.) (pop.)… …   Dicționar Român

  • watt — s.m.inv. TS fis., metrol. nel Sistema Internazionale, unità di misura della potenza elettrica, equivalente al lavoro di un joule al secondo (simb. W) {{line}} {{/line}} DATA: 1895. ETIMO: da Watt, nome dello scienziato e inventore scozzese James… …   Dizionario italiano

  • Watt — Watt, n. [From the distinguished mechanician and scientist, James Watt.] (Physics) A unit of power or activity equal to 10^{7} C.G.S. units of power, or to work done at the rate of one joule a second. An English horse power is approximately equal …   The Collaborative International Dictionary of English

  • watt — [wɔt US wa:t] n written abbreviation W or w [Date: 1800 1900; Origin: James Watt] a unit for measuring electrical power ▪ a 100 watt bulb …   Dictionary of contemporary English

  • watt — {{hw}}{{watt}}{{/hw}}(fis.) Unità di misura della potenza equivalente al lavoro di 1 joule in 1 secondo; SIMB. W. ETIMOLOGIA: dal nome dell inventore, l ingegnere scozzese J. Watt (1736 1819) …   Enciclopedia di italiano

  • Watt — Watt, James (1736 1819) a British engineer who made important improvements to the steam engine. The measure of electrical power, the watt, is named after him …   Dictionary of contemporary English

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.