Time cloak used to hide messages in laser light - physics-math - 28 November 2014 - New Scientist: "A "time cloak" that conceals events rather than objects can hide secret messages through a trick of light, making information invisible to all but the intended recipient.
Like an invisibility cloak that makes something disappear in plain sight, a time cloak makes an event disappear in time. It works by manipulating light traveling along an optical fibre."
Monday, December 1, 2014
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