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It's no illusion: Science has found a way to make not just objects but entire events disappear, experts say.
According to new research by British physicists, it's theoretically possible to create a material that can hide an entire bank heist from human eyes and surveillance cameras.
"The concepts are basically quite simple," said Paul Kinsler, a physicist at Imperial College London, who created the idea with colleagues Martin McCall and Alberto Favaro.
Unlike invisibility cloaks—some of which have been made to work at very small scales—the event cloak would do more than bend light around an object.
(Also see "Acoustic 'Invisibility' Cloaks Possible, Study Says.")
Instead this cloak would use special materials filled with metallic arrays designed to adjust the speed of light passing through.
In theory, the cloak would slow down light coming into the robbery scene while the safecracker is at work. When the robbery is complete, the process would be reversed, with the slowed light now racing to catch back up.
If the "before" and "after" visions are seamlessly stitched together, there should be no visible trace that anything untoward has happened. One second there's a closed safe, and the next second the safe has been emptied.
Originally posted by bauldrick
reply to post by chrismicha77
thats probaly what they are doing with the chem trailing hideing elenin honda and of course don't forget planet x seems like they are already doing it
Time cloaking is possible because of a kind of duality between space and time in electromagnetic theory. In particular, the diffraction of a beam of light in space is mathematically equivalent to the temporal propagation of light through a dispersive medium. In other words, diffraction and dispersion are symmetric in spacetime. That immediately leads to an interesting idea. Just as its easy to make a lens that focuses light in space using diffraction, so it is possible to use dispersion to make a lens that focuses in time. Such a time-lens can be made using an electro-optic modulator, for example, and has a variety of familiar properties. "This time-lens can, for example, magnify or compress in time," say Fridman and co.
Currently, nobody knows how to do that except in fiber optics, in which the speed of a signal can be varied by a few percent by changing the intensity of the light.
Originally posted by JustBreathe11
Aren't civilian technologies something like 10-20 years behind on what the government currently has? At least thats the popular belief. Well when I read about stuff like this it makes me think of the stuff that the government has had and been using for a decade or 2.
Interesting read, thanks for sharing.