What is the parallax effect?

Answer 1

When an observer changes his position#"^color (red)!# there is apparent change in the position of the observed object. This is called parallax effect or simply parallax.

Example of parallax effect.

The change in position of the observer could be due to the movement of observer, or of the observed object or of both.

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Answer 2

Hazel Asher

When viewed from two different lines of sight, an object's apparent displacement or difference in apparent position is called the parallax effect. This effect is frequently used in web design to give the impression of depth by having background elements move at a different rate than foreground elements when the user scrolls.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.