Why is the propagation velocity of a photon in a transparent medium reduced?

B.G. de Grooth

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)
607 Downloads (Pure)


A path integral formalism is used to describe the propagation of photons through a transparent medium. It is shown that the reduced phase velocity of light can be understood quantitatively by taking into account the contribution of all the possible classical paths the photon could have taken in order to reach a detector. These paths include all the multiple scattering processes by the atoms in the medium.
Original languageUndefined
Pages (from-to)1156-1164
Number of pages9
JournalAmerican journal of physics
Issue number12
Publication statusPublished - 1997


  • METIS-129330
  • IR-80292

Cite this