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How to Make a Window Prism

Even though you cannot see the colors in light, when it is bent by another element, paricularly glass or water, the colors separate to create a rainbow effect. A prism is typically made from glass or plastic and allows the light to separate. Hanging a prism in your window can create a rainbow effect against the opposite wall when the sun shines through the window. If you do not have a prism, you can make your own to hang in your window.

Things You'll Need

Blank microscope slides
Tape
Clay
Scissors
Ribbon
Glue
Suction cup hook

Instructions

- 1
  Form three blank microscope slides into the form of a triangle along their long sides. Tape the three corners firmly together with tape, ensuring the edges of the slides sit tightly together to form a tight seal.
- 2
  Press one of the open ends of the triangular microscope slide tube into a clump of clay to create a solid base for the prism.
- 3
  Cut two lengths of ribbon about 1 or 2 inches long.
- 4
  Glue one end of each of the ribbons to two different sides on the open end of the prism. Tie the ribbons together to create a loop on which you can hang the prism.
- 5
  Allow the clay and glue to dry completely.
- 6
  Pour water into the prism, filling it at least two-thirds full. Press some more clay onto the top open end to seal the water inside.
- 7
  Attach a suction cup hook to the window and hang the prism by its ribbon.

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