Response to 'On the orthogonality of the phase velocity and its feasibility for plane waves'

Tom G. MacKay, Akhlesh Lakhtakia

Research output: Contribution to journalArticle


A recent theoretical study of plane waves with orthogonal phase velocity is premised on incorrect assumptions. The conclusion reached therein - namely, that "a plane wave with orthogonal phase velocity cannot possess linear momentum" and therefore "cannot propagate at all" - is incorrect in general.

Original languageEnglish (US)
Pages (from-to)280-281
Number of pages2
Issue number3
StatePublished - Feb 1 2012


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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