This site contains an activity demonstrating how one's eyes influence each other and what occurs when two eyes receive conflicting information. The participant looks through a paper tube with only one eye to perform four different activities: Hole In Your Hand, Overlapping Spots, Circles or Ovals? and Lateral Inhibition. Each activity is quick and includes specific instructions, materials needed, assembly, and an explanation of the observed results. This activity is part of Exploratorium's Science Snacks series.
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