that disperses light. Usually, is prism is a transparent optical element with flat and polished surfaces sides. Prisms can be made from any transparent materials like glass, plastic a prism has a triangular base and rectangular or fluorite. Water in a glass can also acts as prism. It also breaks white light violet (ROYGVIB). You can see these colors when you look at a rainbow in our into constituent colors namely: red, orange, yellow, green, blue, indigo and sky. droplets on the Earth's atmosphere. The water droplets serve as tiny prisms that refract, reflect, and disperse sunlight into spectrum of light appearing in the sky. Spectrum white sunlight red orange yellow green blue glass prism indigo violet Encyciopædia Britannica, inc Figure 2: Dispersion of light