Refer to Flinn Catalog Reference Manual 1998 . Explore the relationships between light energy and the photochemical process. Observe the interactions between energy and matter in a photochemical reaction. Design an aesthetically pleasing photogram. Record scientific methods.
Light is a form of radiant energy.
In this experiment, any light striking the chemically treated paper will turn the paper blue. Covered areas of the treated paper will range in color from white to blue relative to the amount of UV rays that penetrate the specific object. Photograms are simple recordings of shape and opaqueness. Discuss safety and handling of chemicals. Work in dim light.