We often think of rainbows as magical. This makes the rainbow an exciting starting point for study of the spectrum. The colors of visible light will be seen in this enjoyable experiment. To teach beginning grades to be aware of the fascination of astronomy and teach elementary scientific principles. To have children observe a visible spectrum.
Light demonstrates existence of a spectrum.
Notice that light hits bubble and is reflected off the top and bottom of surfaces. Reflected light separates into rainbow colors known as inference color. Finally, as bubbles get thinner the colors become redder. Sunlight or 1 or 2 light filament with sockets. In pans gently mix water and detergent.