Ichiro's mother is trying to teach him how to catch a ball. As the ball approaches Ichiro, it takes up more and more space on Ichiro's retinas. Ichiro perceives the change in size to mean that the ball is getting closer to him rather than perceiving it to mean the ball is getting larger. Which term does the best job of describing this phenomenon?
A) Texture gradient
B) Linear perspective
C) Motion parallax
D) Visual expansion

Question

Quizplus · Accepted Answer

Visual expansion refers to the phenomenon where an object appears to grow in size as it approaches, due to its image taking up more of the viewer's visual field. This is what Ichiro is experiencing as the ball gets closer to him.

Ichiro's Mother Is Trying to Teach Him How to Catch