The technique that creates an illusion of depth within an image on a flat canvas is known as B. PERSPECTIVE
The Lumiere Brothers made the first motion pictures. I would have been awestruck at the technology, being able to see recordings of people and objects in motion because my whole life before that time I had only been able to see paintings and some still photos. I might have even been frightened by some of the things I was shown because I was not yet used to the illusion of film.
Light is the illumination from a light source, whereas value is the degree of lightness or lack of light in a hue.
