Where to put that Wifi router?

So you've moved into your new house, unpacked all those boxes and now you're getting into setting up your electronics and have no idea where to put the Wifi router to ensure the whole house gets a good signal.  Before you'd have to go through trial and error of setting up the router in one room, testing it out throughout the house and moving as necessary.  Now, thanks to a Physics PhD student, you can either run through his calculations or if you are an Android user, you can download his app to get the best spot for your router.  Full article here