joule

(J)
   the SI unit of work or energy, defined to be the work done by a force of one newton acting to move an object through a distance of one meter in the direction in which the force is applied. Equivalently, since kinetic energy is one half the mass times the square of the velocity, one joule is the kinetic energy of a mass of two kilograms moving at a velocity of 1 m/s. This is the same as 107 ergs in the CGS system, or approximately 0.737 562 foot pound in the traditional English system. In other energy units, one joule equals about 9.478 170 x 10-4 Btu, 0.238 846 (small) calories, or 2.777 778 x 10-4 watt hour. The joule is named for the British physicist James Prescott Joule (1818-1889), who demonstrated the equivalence of mechanical and thermal energy in a famous experiment in 1843. Although Joule pronounced his name "jowl", the unit is usually pronounced "jool" or "jew'l".

Dictionary of units of measurement. 2015.

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  • joule — joule …   Dictionnaire des rimes

  • joule — [ ʒul ] n. m. • 1882; nom d un physicien ♦ Phys. Unité de mesure de travail, d énergie et de quantité de chaleur (symb. J), correspondant au travail d une force d un newton se déplaçant d un mètre dans la direction de la force. Une calorie vaut… …   Encyclopédie Universelle

  • Joule — [dʒ̮u:l], das; [s], : Maßeinheit für die Energie (z. B. des Energieumsatzes des menschlichen Körpers; 1 Kalorie = 4,186 Joule): ein Glas Vollmilch hat 167 Joule. * * * Joule 〈[dʒaʊl] od. [ʒu:l] n.; s, ; 〉 Maßeinheit, SI Einheit der Energie,… …   Universal-Lexikon

  • JOULE (J. P.) — Joule compte parmi les plus importants fondateurs de la thermodynamique. Parvenu en 1843 à donner une formulation stricte du principe de la conservation de l’énergie, il entreprit de quantifier les relations entre chaleur et travail au moyen… …   Encyclopédie Universelle

  • joule — JOULE, jouli, s.m. Unitate de măsură a energiei, egală cu lucrul mecanic efectuat de forţa de un newton, când punctul ei de aplicaţie se deplasează cu un metru în direcţia şi în sensul forţei. [pr.: jul] – Din fr., enlg. joule. Trimis de cata, 13 …   Dicționar Român

  • joule — (j[=oo]l), n. [From the distinguished English physicist, James Prescott Joule (1818 1889).] (Physics.) A unit of work which is equal to 10^{7} ergs (the unit of work in the C. G. S. system of units), and is equivalent to one watt second, the… …   The Collaborative International Dictionary of English

  • Joule — se refiere a: Julio o joule (con símbolo J), unidad del Sistema Internacional para energía y trabajo. James Prescott Joule, físico inglés, en honor al cual se denominó la unidad anterior. El efecto Joule, relativo a la energía que disipa un… …   Wikipedia Español

  • joule — [dʒuːl ǁ dʒuːl, dʒaʊl] written abbreviation J noun [countable] a unit of energy, work done, or quantity of heat * * * joule UK US /dʒuːl/ noun [C] (WRITTEN ABBREVIATION J) MEASURES ► …   Financial and business terms

  • Joule — [von DIN u. anderen Organisationen festgelegte Aussprache nur dʒu:l, sonst auch dʒaul] das; [s], <nach dem engl. Physiker James Prescott Joule, 1818 1889> Maßeinheit für die Energie (z. B. den Energieumsatz des Körpers; 1 cal = 4,186… …   Das große Fremdwörterbuch

  • Joule — 〈 [dʒaʊl] od. [ʒu:l] n.; Gen.: od. s, Pl.: ; Zeichen: J〉 Maßeinheit der Energie, 1 J = 1 Newtonmeter (Nm) = 1 Wattsekunde (Ws) = 0,102 Kilopondmeter (kpm) = 0,238 Kalorien (cal) = 1 m2kg/s2 [Etym.: nach dem engl. Physiker James Prescott Joule,… …   Lexikalische Deutsches Wörterbuch

  • Joule — [nach DIN: ds̶c̶h̶u̱l, sonst auch: ds̶c̶h̶a̲u̲l; nach dem engl. Physiker J.JouleP. Joule, 1818 1889] s; [s], : Maßeinheit der Arbeit, Energie und Wärmemenge (z. B. für den Energiewert der aufgenommenen Nahrung; dafür bisher ↑Kalorie); Zeichen J… …   Das Wörterbuch medizinischer Fachausdrücke

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