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Persistance of screen glow/image on the eye HELP!

  1. Oct 22, 2008 #1
    The problem statement, all variables and given/known data

    Although the image in a television screen appears to change smoothly, it consists of 25 seperate pictures every second.
    The production of a flicker free image is helped by:
    (i) PERSISTANCE OF SCREEN GLOW
    (ii) PERSISTANCE OF AN IMAGE ON THE EYE
    Explain how each of the above helps to produce a smooth picture.


    The attempt at a solution

    I was wandering if PERSISTANCE OF VISION was the same as one of the above?
    Also i cant think of how to do working for this but is one of them:
    The image produced merges with the next image and previous image to create a smoothly flowing image.

    Thanks for anyone who helps (:
    amn
     
  2. jcsd
  3. Oct 23, 2008 #2

    alphysicist

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    Homework Helper

    Hi iamamn,

    If I am remembering correctly, I believe persistence of vision is the same as ii. You might want to consider what having a persistent "image on the eye" means physiologically, and how it differs from having a persistent screen glow.
     
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