The crossword solution for the term 'Change the Direction of, as Light' is REFRACT, which is a seven-letter word. Refraction is the process of changing the direction of light when it passes from one medium to another, such as from air to water. This phenomenon is caused by the change in speed that the light experiences when it enters a different medium. The angle at which the light is refracted is determined by the indices of refraction of the two media.