Cloaking Device Invented (sort of)

Scientists Take Step Toward Invisibility

Dr. [David R.] Smith warned against getting ahead of the day’s announcement and envisioning the disappearing Romulan warbirds of “Star Trek” on the horizon. The work “is really a scientific explanation,” he said, adding, “Whether it’s useful is always a question.”

Creating a cloaking device in the visible spectrum would be vastly more complex, he said, since the device would have to warp all of the wavelengths of light. The chance of creating such a device is “dim,” he said, but, “The theory doesn’t prevent it from an electromagnetic point of view.”

A real invisibility cloak? Wizard!

“Our cloak allows a concealed volume, plus the cloak, to appear to have properties similar to free space when viewed externally,” Professor David Smith, of Duke University, said. “The cloak deflects microwave beams so they flow around a ‘hidden’ object, making it appear almost as if nothing were there at all. The waves’ movement is similar to river water flowing around a smooth rock.”