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Letter: Causality casualty

Published 14 August 2013

From Lerida Arnold

It is blindingly obvious what is happening with “entangled” photons – two photons produced by splitting a single photon using a half-silvered mirror – that seem to exchange information at superluminal speeds. In some extra dimension which we cannot see, the photons aren’t divided; they are still a single particle.
Swanage, Dorset, UK

Issue no. 2930 published 17 August 2013

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