1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Light Mass

  1. Mar 28, 2007 #1
    I am a lower sixth student and i got into an argument with my physics teacher today when we were talking about the photovoltec effect and he said that light has no mass. I have a very small understanding of the subject compared to him but from what i do understand the uncertanty principle states that light can change the momenteum of something and so it must have mass to have momentium. Also i know that gravity can bend light and this also points out that it must have a mass. His response was that light is just energy until it hits something and then it changes its energy to mass.
    I cannot grasp the concept of something existing of pure energy i was wondering if somebody could shed some light on this. Thanks
     
  2. jcsd
  3. Mar 28, 2007 #2

    cristo

    User Avatar
    Staff Emeritus
    Science Advisor

  4. Mar 28, 2007 #3
    Thanks, i understand it now.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Light Mass
  1. Does light have mass? (Replies: 6)

Loading...