Background Sunlight illuminates objects during the daytime, and is the energy that drives photo-synthesis. We can generate electromagnetic waves artificially, and light is one form of these waves.
Light waves can pass through some materials, while other materials block light.
To explore the various ways that light paths can change. To develop a model to predict how a lens can change the path of light. Place the light box near the center of a large blank sheet of paper. Adjust the cylindrical lens with the black knob on the top of the light box, until the three light rays viewed on the sheet of paper are parallel. Keep a record of sketches in your lab book.