
Stained glass windows (page L-37).

Student looking at yellow bulb through spectral glasses (page L-40).

Visible light (ROYGBV) spectrum (page L-40).

Red, green, and blue wavebands (page L-41).

Colored light simulation setup (page L-41).

Looking at white light through magenta gel (page L-47).

White light illuminating red card (page L-50).

Looking at yellow paper through a magenta gel (page L-51).