# An Etymological Dictionary of Astronomy and AstrophysicsEnglish-French-Persian

## فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

### M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 5 Search : watt
 kilowatt-hour (kWh)   کیلووات-ساعت   kilowatt-sâ'at (#)Fr.: kilowatt-heure   A unit of energy equivalent to one kilowatt (1 kW) of power expended for one hour (1 h) of time. The kilowatt-hour is not a standard unit in any formal system, but it is commonly used to measure the consumption of electrical energy. To convert to → joules, use: 1 kWh = 3.6 × 106 J = 3.6 × 1013→ ergs.→ kilo-; → watt-hour. watt   وات   watt (#)Fr.: watt   A unit of power in the SI or MKS system of units, symbol W, equivalent to one joule per second. 1 W = 1 J s-1 = 1 kg m2 s-3 = 1 N m s-1 = 107 erg s-1. Electricity: The current in amperes multiplied by the electrical potential in volts.In honor of James Watt (1736-1819) the eminent Scottish inventor and mechanical engineer. watt-hour   وات-ساعت   vât-sâ'at (#)Fr.: watt-heure   Unit of work or energy, equal to one watt for one hour, or 3.6 x 1010 ergs., or 3600 joules. The kilowatt-hour (kWh), i.e. 1,000 watts over the period of one hour, is the usual unit or measure of electricity supply or consumption. 1 kWh = 3.6 x 106 J.→ watt; → hour. wattle   جیل   jil (#)Fr.: barbillon   A fleshy lobe or appendage hanging down from the throat or chin of certain birds, as the domestic chicken or turkey (Dictionary.com).Of uncertain origin.Jil (in Nâini and Baxtiyâri) "wattle." wattmeter   وات‌سنج   vâtsanj (#)Fr.: wattmètre   An instrument used for measuring the magnitude of the power in an electric circuit.→ watt; → -meter.