Definition:Power (Physics)/Unit
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Definition
The SI unit of power is the watt $\mathrm W$.
Watt
The watt is the SI unit of power.
It is defined as being the rate at which $1$ joule of energy is uniformly transformed in $1$ second:
- $1 \, \mathrm W = 1 \, \mathrm J \, \mathrm s^{-1}$
| \(\ds \) | \(\) | \(\ds 1\) | watt | |||||||||||
| \(\ds \) | \(=\) | \(\ds 10^7\) | ergs per second |
Sources
- 1964: Milton Abramowitz and Irene A. Stegun: Handbook of Mathematical Functions ... (previous) ... (next): $2$. Physical Constants and Conversion Factors: Table $2.1$ Common Units and Conversion Factors