Spacetime Cloak

Researchers at Imperial College London have come up with a way to cloak an individual from being viewed by a specific viewer. Those in charge of the project indicate that the process by which this is achieved is by slowing light that is approaching the individual while speeding light that is behind the individual up, creating a gap in the lights wave leaving a gap for the person to be in.

This gap will make it look, (to the viewer) as though no one is there, because of the slowly approaching light, and the fast departing light. The Gap has no light and because our own image is reflected light it disappears.

Another interesting feature is that only the direct observer of the cloak gap will not see you. Someone standing behind you, however, will be able to see you. The cloak, (if one were to activate it) wouldn't hid them from anyone but the direct person the cloak was indicated for.

Unlike traditional ideas and projects involving cloaking (bending light around an object) this idea rather separates the light, (similar to two curtains opening, leaving a gap), leaving a void in spacetime. Researchers, however, have only been able to cloak small particles for only microseconds at a time. Because of the nature of light it may be some time before they are able to cloak an individual.