Optics - Facts from the Encyclopedia - Yahoo! Education
Reference
Dictionary
Encyclopedia
Thesaurus
World Factbook
Spanish Dictionary
Anatomy
Conversion Calculator
 
optics
scientific study of light. Physical optics is concerned with the genesis, nature, and properties of light; physiological optics with the part light plays in vision; and geometrical optics with the reflection and refraction of light as encountered in the study of the mirror and the lens.