Hands-On Activities & Crafts: Whirling Watcher

Introduction

Step-by-Step Demonstration

What's Going On

Running time: 00:47

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What's Going On

The science behind the Whirling Watcher stroboscope, including a discussion of the phenomenon called persistence of vision, which in this activity creates the illusion of a galloping horse.

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This material is based upon work supported by the National Science Foundation under Grant No. 0532756. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.