Examlex
Diverging lenses have negative focal lengths.
Chemical Changes
Reactions that result in the transformation of substances into one or more different substances, involving the making and breaking of chemical bonds.
Top-down Processing
A cognitive process that uses context and pre-existing knowledge to understand information.
Constriction
The act or process of drawing together or becoming narrower; it can apply to physical objects, bodily processes, or even psychological states.
Accommodation
In psychology, the process of adjusting existing cognitive structures in response to new experiences; in vision, the process by which the eye's lens changes shape to focus near or far objects on the retina.
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