Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Forces on massless particles

  1. Oct 17, 2006 #1
    do massless particles not feel forces - other than gravity? The only massless particles I know are photons and neutrinos. Photons feel gravity, but other than that, once a photon is created, is its energy fixed?

  2. jcsd
  3. Oct 17, 2006 #2
    you only know one, its photon. graviton is thought to be massless since it travel (if exist) at the speed of light. neutrino is known to has mass. They dont feel force like we do but react with particles that is able to react with the force they are carrieng. Photon with electrons and protons and such
  4. Oct 18, 2006 #3
    Gluons are massless and feel the strong force.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook