For a certain set of engineers, chemists, physicists and materials scientists, building an invisibility cloak is the ultimate goal. And, surprisingly, they're actually making progress on that front. Since 2006, researchers have rolled out increasingly effective devices and materials made to obscure objects from view.
But while the high-tech invisibility cloaks of the future, powered by “transformation optics” ora “metamaterials,” are certainly fancy and flashy, they can't hold a candle to the old-school approach to invisibility, offered up by Ross Exton and the crew at the At-Bristol Science Center.
Now if we could only convince the world's militaries to fight all their battles in a big pool of glycerine, the Pentagon could stop spending so much researching cloaking technology.