The sequentially flashing Christmas tree lights appeared to generate pulsating waves of motion.This best illustrates
A) relative motion.
B) retinal disparity.
C) the phi phenomenon.
D) interposition.

Question

Quizplus · Accepted Answer

The phi phenomenon is an illusion of movement that occurs when two or more adjacent lights blink on and off in quick succession. This appears to generate a sense of pulsating movement, as seen in the example of the flashing Christmas tree lights.

The Sequentially Flashing Christmas Tree Lights Appeared to Generate Pulsating