"Llum." . . "Color." . . "Luz." . . "Man-Machine Interaction Group." . . . . . "Educational films"@en . "Science films"@en . . . "Understanding color and light"@en . "Understanding color and light" . . . "Understanding color & light"@en . . . . "Understanding color & light" . "Become familiar with the various properties of light and learn how and why we see color."@en . . "Short films"@en . . . "Understanding color and light" . "Understanding color and light"@en . . "Discusses what light and color are. Explains the four basic properties of light and how it acts when it strikes matter, types of primary colors, why we see colors, and how the eye perceives them."@en . . "Discusses what light and color are. Explains the four basic properties of light and how it acts when it strikes matter, types of primary colors, why we see colors, and how the eye perceives them." . . . . . . "Nonfiction films"@en . . . . . .