Watt
The watt is the SI unit of power and is equal to 1 joule per second.
| 1 watt | = | 1 J s-1 | 1 watt | = | 3.414 Btu h-1 | |
| 1 watt | = | 1.0194x10-4 hp (boiler) | 1 watt | = | 0.001359 hp (metric) | |
| 1 watt | = | 0.10197 kgf m s-1 | 1 watt | = | 1.0x107 erg s-1 | |
| 1 watt | = | 2655.22 ft lb h-1 | 1 watt | = | 0.239006 cal s-1 | |
| 1 watt | = | 0.737562 ft lb s-1 | 1 watt | = | 0.0101972 prony |
The watt is named for James Watt, Scottish engineer (1736-1819) and pioneer in steam engine design.
| minimum discernible signal at the antenna terminal of a good FM radio receiver | 2.5x10-15 W |
| average power consumption of a human cell | 1.0x10-12 W |
| power consumption of 8-bit PIC chip in "sleep" | 2.0x10-9 W |
| approximate consumption of a quartz wristwatch | 1.0x10-6 W |
| laser in DVD drive | 5.0x10-3 W |
| typical household compact fluorescent light bulb | 11 W |
| approximate basal metabolic rate used by the human body | 100 W |
| heat output of a domestic electric kettle | 3x103 W |
| Family car (100PS) | 7.4x104 W |
| rate at which a typical petrol pump transfers chemical energy to a vehicle | 16x106 W |
| peak power generation of Hoover Dam | 2.074x109 W |
| Sun energy production | 3.9x1026 W |
See also: abwatt, Calorie per Second, Joule, Prony, SI Units, Statwatt, Watt Hour, Watt, James, Wattage Rating, Wattmeter.
Subjects: Units