International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2572

Short Communication

Mass, energy and momentum of photon in medium

Adnan Salih
Department of Physics, College of Science for Women, Baghdad University, Iraq
Email: [email protected]

  •  Accepted: 13 May 2013
  •  Published: 09 June 2013

Abstract

When photon travels in a medium where the velocity is lower than the speed of light, the photon possesses both the kinetic (Ek) and the potential (Ep) energy. We proved that the energy of photon (E = nEk), where (n) is the refractive index, and the effective mass of photon in medium (m' = nm), where (m) is the effective mass of photon in vacuum. Also we proved that the momentum of photon (p = E/c) inside medium.

 

Key word: Mass, momentum, energy.

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