학술논문
Geometric constructions for image formation by a converging lens.
Document Type
Article
Author
Source
Subject
*CONVERGING lenses
*MIRRORS
*HYPERBOLA
*OPTICAL instruments
*IMAGING systems
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Language
ISSN
0143-0807
Abstract
Light rays emerge from an object in all directions. In introductory texts, three 'special' rays are selected to draw the image produced by lenses and mirrors. This presentation may suggest to students that these three rays are necessary for the formation of an image. We discuss that the three rays attain their 'special status' from the geometric solution of the equation of a hyperbola x-1 + y-1 = c-1 (mirror/lens equation). The material is suitable for use in introductory courses for science majors. [ABSTRACT FROM AUTHOR]