The film in a camera detects light and turns it into the images you see in photographs. Another device that detects light is a solar powered calculator or other device that uses a solar cell. Light causes changes Light can cause chemical changes in some materials. One example is how the sun will fade the colors in your furniture. Photographic film changes its chemical characteristics according to how much light strikes it.
Light can also cause electrical changes to occur in some materials.
For example, a solar cell creates electricity from light. The retina in your eyes goes through chemical changes that creates electrical impulses when light strikes it. An example of this is when sunshine warms your skin. Light can cause electricity to be generated, like with a solar-powered calculator. Light can cause chemical changes, as seen when plants use light to grow.