Khan Academy Static

Are shadows always black, or can they take on the colors of the rainbow? In this hands-on science snack, which was developed and demonstrated by Exploratorium Senior Scientist Paul Doherty, you’ll have fun with colored lightbulbs, experiment with additive color mixtures, and learn about human color perception. Watch the videos, build your own colored shadows, and see how exciting light and shadow can be.

17263_Yellow_and_cyan_challenge.html

17264_Yellow_and_cyan_solution.html

17260_Colored_shadows_Introduction.html

17262_What_s_going_on_Light_travels_in_straight_lines.html

17261_Build_your_own_colored_shadows_Materials_steps.html