Harry Potter fans, you may want to sit down before reading this. Okay...you ready?

A bunch of really smart people who all have an "ist" at the end of their titles (you know, like a Scientist) have combined their super intelligent powers to create a workable design for an invisibility cloak. Oh yes. It's true. The engineers at Purdue University have used the "ist"s' calculations to design a surprisingly simple device that will make things even as big as ...