An adventure-type computer game in which treasure can be acquired by solving problems in ray optics is described. The program is shorter than most adventures and is designed to run in a 16-K Commodore PET microcomputer with tape cassette input. Program and documentation are available at cost from the author. (Author/JN)

Traces the development of instruments used in spectrophotometry. Discusses how spectrophotometric measurements are made. Describes the color comparator, the filter photometer, and the spectrophotometer. Outlines the evolution of optical systems, including light sources, the monochromator, the photodetector, double-beam optics, and split-beam…

Discusses conceptual difficulties in the field of geometrical optics and describes RAY, a microcomputer-based graphic interface that was designed to serve as a teaching aid and as a learning environment. The ability to combine theory and formal representations with real demonstrations and experiments is discussed. (Contains seven references.) (LRW)