An electronic device is described which can be used for demonstrations and laboratory work in Fourier synthesis, phase and group speeds, beats and modulation, and Lissajous figures. The hardware required is inexpensive and simple. (Author/RH)

Mathematically analyzes the polarization of rainbows, a phenomenon which can be demonstrated in a laboratory simulation using polaroid sheets, perspex discs, and a white light source. (MLH)

The standards have been established and registered to advance the science of ophthalmic optics and assure the continuance of skilled and ethical practices in the optical processing and dispensing service by providing a recognized and formalized method of developing skilled craftsmen. Standards cover apprenticeship qualifications, agreement, terms,…

Presents a chronicle of the life of American born Benjamin Thompson. His private life as well as descriptions of his scientific experiments are discussed. (CP)

Three classic visual toys are discussed and instructions are given for their construction. These are moire patterns, kaleidoscope, and stereoscope. (MP)

Investigates the trajectories of saccadic eye movements, the control signals of the eye, and nature of the mechanisms that generate them, using the techniques of bioengineering in collecting the data. (GA)

Explains magneto-optical effects and describes techniques which may be used, in conjunction with certain materials, to reveal domain structures. In addition, simple experiments are described which enable domains to be observed under various conditions of applied fields. (Author/GA)

Presents a derivation of the minimum possible bandwidth of a laser oscillator. (SL)

Discusses some recent advances in telescopes, in particular the design and construction of the Multiple Mirror Telescope in Mt. Hopkins, Arizona. (CP)

Using Keene "Director" fixtures, a Rotterdam, New York, school will save over $16,000 annually and have improved classroom light. These fixtures will pay for themselves in 3-4 years, halving the wattage used per square foot; they direct 40 percent of their light upward to provide uniform, glare-free lighting. (MCG)

Explains the physical principles which result in various colors of the sky. Topics addressed include: blueness, mystical properties of water vapor, ozone, fluctuation theory of scattering, variation of purity and brightness, and red sunsets and sunrises. (DH)

Discusses why light is able to pass through a thick piece of glass but not through a thin piece of paper. (JN)

Outlines Young's scholastic record, involving his educational background, contributions to optics in physics, and deciphering of hieroglyphics in Egyptian philosophy. (CC)