Exploring the Nanoworld > Online Resources > Activities and Programs > Writing with Light

Writing with Light Activity

The energy emitted by an ultraviolet LED can be used in many ways by UV-sensitive materials. In this activity, visitors use a UV LED to "write with light" on a piece of sun paper and to change the color of UV beads. Viewing lights through a spectroscope also allows visitors to break down the light emitted by LEDs and other lights in the room into their individual wavelengths.


  • UV LED
  • Sun paper
  • UV beads
  • Spectroscope (made with a cardboard box and diffraction grating)

Training Videos

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