In an apparent motion demonstration, two pictures are used. In one picture, a fist is located behind a board; in the other, the fist is located in front of the board at the same height. When rapidly alternating between these pictures, what apparent motion would result
A) The fist would appear to go around the side of the board.
B) The fist would appear to "magically" pass through the board.
C) The fist would appear to smash the board.
D) No apparent motion would occur; it would look like two still pictures.

Question

Quizplus · Accepted Answer

When rapidly alternating between the two pictures, our brain fills in the gaps and creates the illusion of continuous motion. In this case, the fist in the second picture appears to pass through the board in front of it, creating the "magical" appearance described in choice B.

In an Apparent Motion Demonstration, Two Pictures Are Used