https://www.nature.com/articles/s41467-019-08735-8
> By jointly modulating the spatial and temporal degrees of freedom, arbitrary > group velocities are unambiguously observed in free space above or below the > speed of light in vacuum, whether in the forward direction propagating away > from the source or even traveling backwards towards it. -- Kim Holburn IT Network & Security Consultant T: +61 2 61402408 M: +61 404072753 mailto:[email protected] aim://kimholburn skype://kholburn - PGP Public Key on request _______________________________________________ Link mailing list [email protected] http://mailman.anu.edu.au/mailman/listinfo/link
