Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    1
    ReputationRep:
    You know when light goes through the diffraction grating, we have to measure the angle... can the angle ever be 90° ?
    Offline

    10
    ReputationRep:
    (Original post by Tenzinlhazey)
    You know when light goes through the diffraction grating, we have to measure the angle... can the angle ever be 90° ?
    If you are talking about the angle  \theta described in this website
    (http://www.cyberphysics.co.uk/topics...difraction.htm),

    the answer is no.
    • Thread Starter
    Offline

    1
    ReputationRep:
    Thank you for your reply. I still dont understand, how come it can never be 90 degrees?
    Offline

    3
    ReputationRep:
    How could it be above 90? There's a wall in the way. The light can't go back through the wall.
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    What newspaper do you read/prefer?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.