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

A Question on Light/Photons

  1. Aug 20, 2003 #1
    Forgive me if this has been answered elsewhere on the forums, or if there really is an answer out there. I am a High School student and have been bothered by this problem for quite some time, so I was wondering if someone here could possibly help. Please though, I'm just a High School student, so there may be problems in this :).

    Okay, a photon in motion would have both infinite energy and infinite mass. The infinite mass and the acceleration of the photon would warp the fabrics of space-time, creating an incredibly high ammount of sub-atomic blackholes. The power of an infinite mass black hole, multiplied by the trillions plus photons just here on earth, would spread out, causing everything exposed to light to be "sucked" into the blackhole, thus causing light to be a destructive force. However, light does not do this. My question is (if everything so far is valid)-why does light not do this?

    Thank you :).
  2. jcsd
  3. Aug 20, 2003 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    A photon in motion does not have infinite energy nor infinite mass.
  4. Aug 20, 2003 #3
    A photon has 0 mass and energy at rest. It's energy is based on it's momentum, but yet, it's mass is not affected by it's momentum.

    This may help: http://hyperphysics.phy-astr.gsu.ed...tiv/relmom.html [Broken]
    Last edited by a moderator: May 1, 2017
  5. Aug 20, 2003 #4
    Ahh thank you very much.

    However, the link does not work :(.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook