Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(1361 Watt*0.3 /(1 (m^2) * Stefan‐Boltzmann constant))^(1/4) - 273 Kelvin
(1361 Watt*0.3 /(1 (m^2) * Stefan‐Boltzmann constant))^(1/4) - 273 Kelvin
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random