• A narrow beam of light from a slide projector is dispersed by a prism into a rainbow.
  • Can be displayed on a white board or screen, room lights must be dimmed.

        (insert slit slide)
        (position projector so long dimension of prism is ~facing front wall)
        (center light beam on the wide side, light exits narrow side bending toward the long dimension,           angle long dimension of prism slightly away from light path)
        (focus the image)

  • Spectrum produced by above setup.