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Remote cloak

Simulations of the theoretical cloak designed by Che Ting Chan and colleagues show how it can make both itself and a nearby object vanish. (Left) When illuminated by electromagnetic radiation, an arc-shaped object reveals its presence by scattering the oncoming waves. (Right) However, when placed beside the cloak — which contains a smaller copy of the object in its shell — the scattering is cancelled, leaving the object invisible. (Credit: Chan et al.)