The great unappreciated weakness of invisibility cloaks is that they only make things invisible to human eyes. Or x-ray imagers. Or ultraviolet sensors, infrared image analyzers, echo-location audio ...

Magnetic invisibility sounds simple in theory. Place the right materials around an object and magnetic fields flow around it as if nothing were there. Reality has been far messier. For nearly two ...

Hospitals, power grids, aerospace systems, and scientific laboratories all host extremely sensitive technologies that allow the facilities to do what they need to do—as long as no pesky, unwanted ...

Russia has developed and deployed new camouflage technology for its troops that many have nicknamed “invisibility cloaks,” local news has reported. “This new ‘cloak-nevidimka’ is part of the Russian – ...