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Whirling Watcher: Make a Stroboscope


Source Institutions

    The Exploratorium

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Whirling Watcher: Make a Stroboscope

In this activity, learners make a stroboscope--a spinning disk with slits around the edge that you look through. Brief but frequent glimpses of images seen through the slits lead to a surprising result, which teaches learners about vision and the human nervous system. The activity includes three short online videos: Introduction, Step-by-Step Instructions, and What's Going On. Also available: a concept map and a "Going Further" document that suggests variations on this activity.

Quick Guide


Preparation Time:
Under 5 minutes

Learning Time:
10 to 30 minutes

Estimated Materials Cost:
1 cent - $1 per student

Age Range:
Ages 8 - 14

Resource Type:
Activity

Language:
English

Materials List (per student)


  • paper plate or card stock
  • glue stick
  • pattern of galloping horses (included in downloadable PDF)
  • pushpin
  • pencil with eraser
  • mirror (wall mirror or plastic hand mirror)

Subjects


  • Life Sciences
    • Human Body
      • The Brain and Nervous System
    • Human Senses and Perception
      • Vision
      • Perception

Informal Categories


  • Toys

Audience


To use this activity, learners need to:

  • see
  • 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:

Rights:

  • All Rights Reserved, The Exploratorium, ©2007

Funding Source:

  • National Science Foundation

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