(reduced Planck constant)%5E2 pi%5E2%2F(MeV%2F(speed of light%5E2) *(10%5E-15 m)%5E2)

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.