Instructional Video

Khan Academy: Intro: Turn an Old Cd Into a Spectroscope to Analyze Light & Color

Curated by ACT

Will the real white light please stand up? Two light sources that appear the same to your eye may actually be made up of different wavelengths of light. In this science snack activity, Paul Doherty of the Exploratorium Teacher Institute introduces a simple device called a CD spectroscope that will help you discover the truth behind the light you see. [2:17]

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Concepts
color, light
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Additional Tags
flourescent, incandescent, wavelengths, khan academy, khan: introduction: turn an old cd into a spectroscope to analyze light & color, defraction, spectrometer, colors of light
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Classroom Considerations
  • Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional|practice