Bridge Light

An illuminating activity demonstrates how interference of light waves creates a pattern. Using Plexiglas™ and construction paper, participants see rainbows appear as they twist or press against the plastic plates. After the activity, you can discuss with your class how constructive and destructive interference of light waves is occurring and which colors represent each phenomenon. 

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Classroom Considerations
  • This resource is only available on an unencrypted HTTP website. It should be fine for general use, but don’t use it to share any personally identifiable information
  • A simple and visually appealing activity that stimulates critical thinking
  • A thorough explanation of the science behind the spectacle
  • None