It is the ability to endure or continue with activities even when the road ahead appears closed. It involves holding on despite the discomfort, inconvenience, and sometimes pain involved in doing the activity.

Persistence is required not only for success but also for overcoming obstacles, overcoming fears, improving self-confidence, achieving personal goals, and much more.

Persistence of Vision in vision refers to an optical illusion, which occurs when the vision of an object doesn’t stop for a long time even after the rays of light entering it have stopped entering the eye.

It also occurs when objects aren’t stationary but moving or changing shape and size. As we know moving objects can distort our vision and as objects don’t stay still our eye tends to move towards them.


Persistence of Vision

What Is Persistence Of Vision?

Persistence of vision is the optical illusion that occurs when a person looks at an object, then quickly moves their head so they are looking in a different direction.

The previous image will continue to be seen for several seconds as it fades from view.

For example, if someone were to look at a stop sign and quickly move their head to the left or right, the word “STOP” would still appear on their retina for about two seconds after they start moving their head.



What is Persistence of Vision?

The term “persistence of vision display” or “POV display” has been used for LED display devices that compose images by displaying one spatial portion at a time in rapid succession, (for example, one column of pixels every few milliseconds).

A two-dimensional POV display is often accomplished by means of rapidly moving a single row of LEDs along a linear or circular path.

The effect is that the image is perceived as a whole by the viewer as long as the entire path is completed during the visual persistence time of the human eye.

A further effect is often to give the illusion of the image floating in mid-air. A three-dimensional POV display is often constructed using a 2D grid of LEDs which is swept or rotated through a volume.

POV display devices can be used in combination with long camera exposures to produce light writing.

A common example of this can be seen in the use of bicycle wheel lights that produce patterns.