Cade enjoys playing with sparklers on the 4th of July. He loves watching his sister run with a sparkler and the momentary trail of light that seems to be left behind. Which aspect of our visual system best explains this trail of light?
A) persistence of vision
B) lateral inhibition
C) microsaccades of the eyes
D) achromatopsia

Question

Quizplus · Accepted Answer

The trail of light that Cade sees when his sister runs with the sparkler is due to persistence of vision. This is the phenomenon where an image continues to be visible to our eyes even after the stimulus has been removed. In the case of the sparkler, the light trail persists in our visual field for a brief period after the sparkler has moved, creating the illusion of a trail of light.

Cade Enjoys Playing with Sparklers on the 4th of July