Students will observe how light travels and creates images.
Students build pinhole cameras and observe images it creates.
The way we see is by light rays reflecting off objects or being emitted by them. The sun is our primary light source in the daytime and by reflecting off molecules in the air, makes the sky blue. When a camera captures an image on film, it is exposing chemically reactive photographic film to reflected light in the world. But if we hold photographic film out in the light we get a mess, not a picture. By restricting the light in this way, the camera can recreate fairly effectively a picture of the outside world.