A pinhole camera consists of a box or tube with ... from one material to another is called refraction. The diagram shows refraction of light passing into, and then out of, a glass block.

It makes use of just a few parts; the viewfinder from an old camcorder, a low-light security camera module, and a collection of infrared LEDs. The low-light camera is capable of detecting infrared ...

A camera that exposes photographic film to light in order to take a picture. Used since the late 1800s, the film is a chemical emulsion on a plastic substrate that is sensitive to light.