Seems the whole world has gone Portal mad this week. Artist Miles Donovan certainly has, coming up with these great schematic pieces showing how the guns actually work.

Or, how he thinks they work. It's not like Miles actually knows. Or he wouldn't be selling paintings on Etsy (including this one), he'd be, I don't know, touring the women's change rooms of the world, or trying to bring about world peace.

Portal Gun Schematic by Miles Donovan