Persistence of vision vs screen glow and eye image persistence

[iamamn]

Homework Statement

Although the image in a television screen appears to change smoothly, it consists of 25 separate 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 can't 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

 

[alphysicist]

Hi iamamn,

Homework Statement

Although the image in a television screen appears to change smoothly, it consists of 25 separate 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?

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.