PIRA: 6A46.00

Lab Equipment

  • Nalgene container with water
  • Black cloth
  • overhead projector


  1. Fill container with water and place in the center of the overhead
  2. Cover the top focusing lens with the black cloth ( you are not using the overhead as typically used to look at something on the screen).
  3. Observe the resulting rainbow around the top perimeter of the room.