Emission Theory (vision) - Persistence of The Theory

Persistence of The Theory

Winer et al. (2002) have found recent evidence that as many as 50% of American college students believe in emission theory.

Modern computer graphics programs that use ray tracing often trace lines of sight from "eyes" to objects and thence to light sources to determine the colour and luminance of pixels in a simulated scene. This avoids the extra computation that would be required to trace rays which do not intersect with "eyes", and which by definition do not contribute to the simulated image.

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Famous quotes containing the words persistence and/or theory:

    “Extreme patience and persistence are required,
    Yet everybody succeeds at this before being handed
    The surprise box lunch of the rest of his life.”
    —John Ashbery (b. 1927)

    “It is not enough for theory to describe and analyse, it must itself be an event in the universe it describes. In order to do this theory must partake of and become the acceleration of this logic. It must tear itself from all referents and take pride only in the future. Theory must operate on time at the cost of a deliberate distortion of present reality.”
    —Jean Baudrillard (b. 1929)