Motion backwards in time? A second example

Details Motion backwards in time? A second example Motion backwards in time? A second example

2005-10-31

arxiv.org/abs/physics/0510278v1

Physics

General Physics

Five pages with no figures. Written in September 2001

Scientific paper

It is a striking result the one found by Wang, Kuzmich & Dogariu 1 (see also 2) experimentally last year, that a pulse of light, entered into an atomic caesium (Cs) vapour cell, appeared at the exit before its entrance (!) by 62 nanoseconds. It has to be mentioned that the shape of the pulse was maintained (cf. fig. 4 of 1), so that its peak was not shifted forward inside the pulse. Thus the explanation that the peak of the pulse was advanced at the exit, with the result of emerging there before the entrance of the peak of the incident pulse, does not apply.

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