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.
(3/8) ((planck's constant)^2 / electron mass) / (1 angstrom)^2
(3/8) ((planck's constant)^2 / electron mass) / (1 angstrom)^2
Natural Language
Math Input
Extended Keyboard
