bn:00035562n
Noun Concept
EN
focus
EN
Maximum clarity or distinctness of an image rendered by an optical system WordNet 3.0
Definitions
Examples
Relations
Sources
EN
Maximum clarity or distinctness of an image rendered by an optical system WordNet 3.0 & Open English WordNet
A point at which reflected or refracted rays of light converge. Wiktionary
EN
The heat of sunlight at the focus of a magnifying glass can easily set dry leaves on fire. Wiktionary
DERIVATION
WordNet 3.0 & Open English WordNet
EN
Wiktionary
EN