They wrapped a small, 5-inch wide cylinder in a special metal mesh (the cloak), and then fired microwaves and observed that the waves were transferred around the object in a way that concealed the object's existence. It's only 2-dimensional for now, 3-dimensional cloaking is believed possible but more difficult. And it's only functional for microwaves, not visible light (another hurdle). Still, it's all very cool. Full article at National Geographic: First Invisibility Cloak Tested Successfully |
