1. Limited time only! Sign up for a free 30min personal 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!

Direction of Light to our Eyes

  1. Aug 6, 2015 #1
    Hi everyone! I just wonder when I use a laser pointer to other direction. How come our eyes able to see it? Since the light is traveling towards the other direction and not to our eyes. Is there an equation associated with that or its just basic logic is needed to understand why this happen.

  2. jcsd
  3. Aug 6, 2015 #2


    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    You're seeing light that is scattered by dust in the atmosphere.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook