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

B Light what is it really ? past just another form of energy?

  1. Mar 5, 2016 #1
    Light is electric magnetic waves alternating. But are electric magnetic waves?, What are they composed of. electric and magnetic fields ? But what are they composed of ? is there any physical part of a wave to imagine. light is energy but is that the best description to what light is. We know heat is energy but we know thermal energy means atoms moving faster or slower. So what does light mean?
     
  2. jcsd
  3. Mar 5, 2016 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    The best models of light is in terms of an electromagnetic interaction mediated by photons ... there is no reason to suspect that photons are made of anything else but packets of energy and momentum. Electromagnetic waves that you are probably used to are an emergent phenomenon of many photons.

    In the sense that thermal energy is random kinetic energy of particles, then light is potential energy.

    What something is "really" depends on how you define "real" ... if you had found what something is "really", how would you tell?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Light what is it really ? past just another form of energy?
  1. What Really IS Energy? (Replies: 33)

Loading...