Now you can explain why the sky is blue and the sunset is red. Colored Shadows Shadows are not all black and white. The scattering of light by the atmosphere, which creates the blue sky and red sunsets, can be modeled when light from a flashlight shines through clear glue sticks. Laser Jello Use gelatin as a smoked lens, to view total internal reflection, and as a color filter. Polarized Light Mosaic With polarized light, you can make a stained glass window without glass.
Soap Bubbles Create geometric art with soap films.
Spectra Fingerprints for light sources.