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Benham’s Disk


Source Institutions

    Twin Cities Public Television

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Benham’s Disk

In this activity (on page 2 of the PDF), learners will see the illusion of colors produced by a rotating black and white image known as Benham’s Disk. They will experiment with rotation direction and speed to see if they can discern a relationship between the patterns and what colors they reproduce. Relates to the linked video, DragonflyTV GPS: Light and Color.

Quick Guide


Preparation Time:
5 to 10 minutes

Learning Time:
45 to 60 minutes

Estimated Materials Cost:
$1 - $5 per group of students

Age Range:
Ages 8 - 14

Resource Type:
Activity

Language:
English

Materials List (per group of students)


  • posterboard or cardboard
  • glue stick or other suitable adhesive
  • pattern disk
  • access to a copy machine
  • a black marking pen
  • a rotator, such as a portable electric drill

Subjects


  • Life Sciences
    • Human Body
      • The Brain and Nervous System
    • Human Senses and Perception
      • Vision
      • Perception
  • Physical Sciences
    • Light and Optics
      • Sunlight and Color
    • Vibration and Waves
      • Light and Optics
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations
      • Formulating Explanations
      • Communicating Results

Audience


To use this activity, learners need to:

  • see
  • see color
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other


Components that are part of this resource:

This resource is part of:

Access Rights:

  • Free access

By:

Source Collection:

  • DragonflyTV

Rights:

  • All Rights Reserved, Twin Cities Public Television, Inc., ©2006

Funding Source:

  • National Science Foundation, 515566

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This resource is part of these lists:

  • Thumbnail EPCS by rmerton on 2012-06-29
  • Thumbnail list by pal4740 on 2014-11-19