Overlapping Spots: Make a bright spot brighter

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This perception trick focuses on conflicting information to the brain...instead of trying to see two images, you're trying to get a bright spot by overlapping the image you see through two tubes.

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
Under 5 minutes
Estimated Materials Cost:
1 cent - $1 per student
Age Range:
Ages 4 - 11
Resource Type:
Activity
Language:
English

Materials List (per student)

  • Two sheets of 8 1/2 x 11-inch (A4) white paper
  • Transparent tape
  • A well-lit white screen, wall, or sheet of paper

Subjects

  • Life Sciences
    • Human Body
      • The Brain and Nervous System
    • Human Senses and Perception
      • Vision
      • Perception
  • Physical Sciences
    • Vibration and Waves
      • Light and Optics

Other

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Access Rights:

  • Free access

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