Georgia Department of Education
Ga Virtual Learning: Geometric Optics
This interactive unit will help students to understand the basics of geometric optics. Learn what happens when light strikes the boundary between two media as well as the difference between a real and virtual image? Also explore the law...
Boston University
Bu: Optics: Geometric Optics
Several short descriptions of demonstrations which illustrate principles of geometric optics (many of which focus upon refraction).
Walter Fendt
Walter Fendt: Refracting Astronomical Telescope
An app for investigating the operation of a refracting telescope. The location of the eyepiece and objective lens can be altered, and the focal point and path of light through the lenses can be observed.
Other
Geometric Optics
This site provides a very brief definition to geometric optics, and includes links to related information.