Diffraction and Interference

How do you study something you can't see? The instructor in a video models an experiment that shows the wave properties of light (electromagnetic waves). The video follows another in a 14-part series that describes the features of electromagnetic waves.

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Instructional Ideas

  • Have learners perform the experiment modeled in the video; show the video for clarification and to allow for note taking
  • Model the experiment for classes and ask for predictions before showing each step in the video
Classroom Considerations

  • Showing the video requires Internet access
Pros

  • Images help explain the behavior of the wave properties
Cons

  • Resource shows the experiment through diagrams and drawings, but seeing the actual procedure and results is much more powerful
NGSS