If you bring your finger toward your nose, at some point you will see two fingers. This is due to
A)motion parallax.
B)constancy.
C)retinal disparity.
D)shadowing.

Question

Quizplus · Accepted Answer

The phenomenon of seeing two fingers when bringing them towards the nose is due to retinal disparity. This is because each eye receives a slightly different image of the fingers, and the brain combines these images to create the perception of depth. The difference between the two images is called retinal disparity, which is used by the brain to calculate the distance of objects in the visual field. Motion parallax refers to the perceived movement of objects when the observer is in motion, while constancy is the ability to perceive objects as remaining the same despite changes in their appearance or context. Shadowing refers to the obstruction of light or the casting of shadows. None of these concepts explain the specific phenomenon described in the question.

If You Bring Your Finger Toward Your Nose, at Some