from The Century Dictionary and Cyclopedia

  • n. The work done in one second of time by the expenditure of one watt of power; one sixtieth of a watt-minute.


Sorry, no etymologies found.


  • The efficiency of the reflector in the WL gives a little more light output per watt-second.

    A Walk Around the Monobloc, Pt. 1

  • Here is the control end of a WL Ultra 600, which is a 300 watt-second WS monobloc.

    A Walk Around the Monobloc, Pt. 1

  • Also,what could I do with a power pack that is at a constant watt-second?

    A Walk Around the Monobloc, Pt. 1

  • The SI unit of energy is the joule (J), equal to one watt-second.


  • Since a watt-second is a very small energy unit and in most cases the operating times of electrical equipment amounts to many hours, the kWh

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  • In fact, since Virginia Dominion Power charges 7.227 cents per kilowatt-hour, 1.12 millionths of a watt-second would cost you 2.2 trillionths of a cent.

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  • A joule is a watt-second, so this capacitor could deliver one watt for 0.4165 seconds, or 0.4165 watts for one second, or any other combination in which watts times seconds equals 0.4165.

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  • One joule equals one watt-second, so a watt-hour equals 1 x 60 x 60 = 3,600 joules.

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  • What we need to optimize for is work done per dollar and work done per joule (a watt-second).

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  • It has a built-in 40 watt-second flash with diffused panel on the front and an old 5-inch B&W TV on the bottom with a live feed from the camera so you can compose the picture.

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