Search Results
Showing results 1 to 4 of 4
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-344.gif?itok=lW3zoeqZ)
The Blind Spot
Source Institutions
In this activity (1st on the page), learners find their blind spot--the area on the retina without receptors that respond to light.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-355.jpg?itok=V29d0NzP)
Benham's Disk
Source Institutions
In this activity, learners make a Benham Top to explore visual illusions and optics.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-674.jpg?itok=WljRWpIg)
Colored Shadows
Source Institutions
In this optics activity, learners discover that not all shadows are black. Learners explore human color perception by using colored lights to make additive color mixtures.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-763.jpg?itok=bqzFEdLO)
Benham's Disk
Source Institutions
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.