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  • Don Rathjen
Benham's Disk
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CC BY-NC-SA
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In this optics activity, learners discover that when they rotate a special black and white pattern called a Benham's Disk, it produces the illusion of colored rings. Learners experiment with the speed of rotation and direction of rotation to observe varying patterns. Use this activity to explain to learners how our eyes detect color and how different color receptors in the eye respond at different rates.

Subject:
Physics
Material Type:
Activity/Lab
Provider:
Exploratorium
Provider Set:
Science Snacks
Author:
California Department of Education
Don Rathjen
National Science Foundation
NEC Foundation of America
The Exploratorium
Date Added:
09/04/2019