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watt |
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wattSI unit of power (the rate of expenditure or transformation of energy from one form to another) defined as one joule per second. A light bulb, for example, may use 40, 60, 100, or 150 watts of power; an electric heater will use several kilowatts (thousands of watts). The watt is named after the Scottish engineer James Watt. The absolute watt is defined as the power used when one joule of work is done in one second. In electrical terms, the flow of one ampere of current through a conductor whose ends are at a potential difference of one volt uses one watt of power (watts = volts × amperes).
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| The superconducting electrode can remove only femtowatts of power, so it is not capable of cooling any but the tiniest of conductors, and then only slightly. Femtowatt sensitivity is achieved with the photodiode and feedback resistor network on the cold plate. In this future world, individual processors will cost millicents and processor operations will consume femtowatts. |
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Femtowatt
