Additive Color Mixing: The process of using primary colors layered on top of one another in order to reach white. It is the process by which video projectors mix light.

Alpha Channel: A transparent portion of an image file; used when layering images in a projection.

Ambient Light: Unwanted light from sources other than the projector that radiate onto the projection surface. It negatively affects the contrast ratio of the projection.

Analog: The representation of an image through physical mechanisms such as a film projector.

Analog Signal: The transmission of data through physical quantities such as variations in voltage or magnetic polarization.

Analog Video: The process which uses a time-varying voltage that at any given moment is ...

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