Gratings {grating, vision} have alternating dark bars and light bars. Each visual-angle degree has some bar pairs {cycles per degree}. Gratings have cycles per visual-angle degree {spatial frequency, grating}. Gratings {phase, grating} can have relative visual-image positions. Gratings {sine wave grating} can have luminance variation like sine waves, rather than sharp edges.
Consciousness>Consciousness>Sense>Vision>Techniques
1-Consciousness-Sense-Vision-Techniques
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Date Modified: 2022.0224