Polarized light consists of light waves that have a simple, orderly arrangement. The waves of ordinary light are arranged in a complex, disorderly manner. Ordinary light from the sun or a lamp is composed of disorderly waves that vibrate in all directions perpendicular to the light beam. But polarized light consists of orderly waves that vibrate in only one direction. Because of its orderly structure, polarized light can be used in ways in which ordinary light cannot. For example, the internal physical structure of many transparent materials can be seen with the aid of polarized light. Light polarizers are powerful tools that are used in science, industry, and daily life.