Resumen de Experiments on Yellow Light Using a Dark Box and Plastic Colored Cats

Erdoğan Özdemir, Sebahattin Kartal

• In this study, a box, which we call a dark box, is made to keep out light and has a peephole for looking inside. Colorful remote-controlled RGB light-emitting diode (LED) lights and yellow, white, and blue plastic objects, shaped like cat masks, were inserted inside the box. We prove by several experiments using the dark box that light that appears yellow can consist of red and green light.

  The Sun and ordinary lamps generally produce white light.1 White light contains red, orange, yellow, green, blue, and violet colors. Therefore, we see objects in different colors because these objects reflect one or more light colors from the rays that make up the white light and absorb the others.2 As a result, we see these objects as the primary light color or a color formed by a mixture of primary colors.3,4 In this study, the box was inspired by the dark room in which Newton carried out his light experiments. Unlike Newton, we can control the color of light used to illuminate objects placed inside the box, by using remote-controlled LED light strips easily obtained at a myriad of sources. We can prove by several experiments in the dark box that what we see as yellow light color can consist of both red and green lights.