Ray diagrams were drawn by Abby. One had the object placed between the focal length and twice the focal length, and the second had the object placed at the focal length. The incident rays and refracted rays were drawn to scale on graph paper, and the images of each described. The lens set was then used to show the convergence of light rays as they passed through convex lenses of different thickness. The thicker the lens, the shorter the focal length of the lens. The divergence of light using a concave lens was demonstrated using the lens set and a laser light source. The images formed were seen to be present in front of the lens, formed by virtual light rays.