Physicist’s time cloak stops the clock

Pentagon-supported physicists say they have devised a time cloak that briefly makes an event undetectable.

The laboratory device manipulates the flow of light in such a way that for the merest fraction of a second an event cannot be seen, according to a paper published in the science journal Nature.

It adds to experimental work in creating next-generation camouflage — a so-called invisibility cloak in which specific colours cannot be perceived by the human eye — via redwolf.newsvine.com

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