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.
plot 3950/Log[R] - 130.7 -273.15 from R=1e3 to 20e3
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
