Light, Shadow and other cool Optics

 Light appears white when all the colors of the rainbow come together, but there are several ways to make the rainbow visible.

 A Spectroscope is an optical device for  observing a spectrum of light from a given source, like the sun or a light bulb.  In your bag is a blue cardboard template for your own spectroscope. To build it find an old CD or DVD and watch the instructional video below.