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!

Homework Help: Light waves

  1. Jan 16, 2006 #1
    hey found this question in my text book...
    explain using interferance why a super thin film is transparent or invisible in transmitted light but seems to be opaque when viewed with reflected light. Draw a diagram for your solution. any ideas?? i really have no idea. thanx for your time though.
  2. jcsd
  3. Jan 17, 2006 #2


    User Avatar
    Science Advisor
    Homework Helper

    HINT: How much reflected light would there be if all the light were transmitted? :)
  4. Jan 17, 2006 #3
    if all the light went through wouldnt it be "invisible" but how could it be opaque?, like i guess some reflected rays and incident rays would create destructive interferance, but wouldnt you still be able to see through????
  5. Jan 17, 2006 #4


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Think of what your looking for. (Light thats reflected back or light that goes through)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook