Iridescence

An opitcal phenomenon! The color of the surface changes if it is viewed at a different angle. Try this fun ice cube experiment.

Materials: Ice cubes, salt, food coloring (including RED), bowl

Pour ice cubes into large bowl and then sprinkle salt over the cubes. Add one color of food coloring at a time and see if you see the shimmer? Iridescent color!  Some great links below for information on what is happening during experiment.

Explore Properties of Light

Iridescence