Super-smart Rodney fic

Hi everyone :)
I am after a particular super-smart Rodney fic, which will have been from quite a few years ago and is John/Rodney. Rodney is made much smarter (than usual) by an Ancient device, but after a while he crashes and becomes less and less smart until he can't function. To save him, John uses the same machine, to make himself smart enough to save Rodney before they both wind up in the same state. I remember that Zelenka has to set John on the right track by teaching him physics, which John can pick up in minutes.

Thank you everyone in advance!

Edit: Found!