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Grammar of the Shot, 2nd Edition by Christopher J. Bowen, Roy Thompson

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Light as Energy

Light, no matter what generates it, is energy—energy waves of electromagnetic radiation that happen to live in a zone of frequencies known as the visible spectrum. Light itself is invisible, but objects that reflect light can appear white, black, or combinations of colors or hues from violet, blue, green, yellow, orange, and red. When white light (all color wavelengths) hits an object and reflects all wavelengths equally, you see that object as white. If an object absorbs all light then the object is seen as black. When an object absorbs all colors but reflects yellow you see it as yellow. Not all light sources emit pure white light in a balanced spectrum but luckily we have ways of measuring the color of light.

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