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.
(reduced Planck constant)^2 pi^2/(MeV/(speed of light^2) *(10^-15 m)^2)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random