Examlex
Which dihydroxybenzene can yield only one mononitro derivative?
Brightness
The attribute of visual perception in accordance with which an area appears to emit more or less light.
Perceptual Constancy
The brain's ability to recognize that an object's characteristics (such as size, color, and shape) remain the same despite changes in the environment or perspective.
Phi Phenomenon
An optical illusion of perceiving continuous motion between separate objects viewed rapidly in succession.
Figure-ground Distinction
The perceptual separation of an object (the figure) from its surroundings (the ground), a fundamental process in visual organization.
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