Persistance of screen glow/image on the eye HELP

[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.

 

[baba89]

I can provide a response to the content regarding the persistence of screen glow and image on the eye.

Firstly, persistence of screen glow refers to the phenomenon where the phosphors on a television or computer screen continue to emit light even after the image has changed. This helps to create a smooth picture by ensuring that there is no visible flickering between images. This is because the previous image is still slightly visible due to the persistence of screen glow, which blends seamlessly with the next image.

Secondly, persistence of an image on the eye refers to the afterimage that is perceived when looking away from a bright light source, such as a television or computer screen. This afterimage is caused by the retina retaining the image for a short period of time. This helps to create a smooth picture by reducing the perceived flicker between images. The afterimage acts as a buffer, allowing the brain to perceive a continuous image, rather than separate frames.

In terms of persistence of vision, it is closely related to the persistence of an image on the eye. Persistence of vision refers to the ability of the brain to retain an image for a short period of time after it has disappeared. This helps to create a smooth picture by blending the separate images into a continuous stream of motion.

In conclusion, both persistence of screen glow and image on the eye, as well as persistence of vision, play important roles in creating a smooth picture on a television or computer screen. They work together to reduce flickering and merge separate images into a seamless flow of motion, providing a more enjoyable viewing experience.