A time cloak conceals events rather than objects. Cloaked messages were so secret no one could read them – now they can sneak along optical fibres before being revealed.
Time cloak used to hide messages in laser light
Posted in futurism
Posted in futurism
A time cloak conceals events rather than objects. Cloaked messages were so secret no one could read them – now they can sneak along optical fibres before being revealed.