Describes the operation and educational benefits of the use of a closed circuit television system in the demonstration of a hologram. (CP)

Summarizes Goethe's color studies and his methods of study. It is proposed that the act of accurate qualitative observation creates the capability in the observer for an intuitive understanding of the physical laws underlying the phenomena under observation. The use of such a method as a basis for laboratory instruction is discussed. (Author/CP)

Includes description of a light meter, photometer, fluid flow apparatus, and acoustic grating. (RH)

Describes a simple method, the Edser-Butler methods, for calibrating the Fabry-Pevot fringes seen in the focal plane of a spectrograph. (GA)

Proposes an alternative to the classical minimum-deviation method for determining the refractive index of a prism. This new "fixed angle of incidence method" may find applications in research. (Author/GA)

Presents a simplified theoretical analysis of the variation of quantum yield with photon energy in the photoelectric experiment. Describes a way to amplify the experiment and make it more instructive to advanced students through the measurement of quantum yield of a photo cell. (GA)

Describes an apparatus for investigating the behavior of photoelectrons in a uniform magnetic field in either a vacuum or a low-pressure gas. Presents data and discusses some basic features of the photoelectric effect and the diffusion of free electrons in a gas. (GA)

Explains a laboratory experiment dealing with the optical features of the human eye. Shows how to measure the magnification of the retina and the refractive anomaly of the eye could be used to measure the refractive power of the observer's eye. (GA)

Presents a quantitative laboratory experiment in geometrical optics. It involves the student in the measurement of the radius of curvature of the cornea and is based on an old method devised by Kohlrausch in 1839. (Author/GA)

Presents the results of two experiments concerning the phenomena of the interference of probabilities and of the so called Aharonov-Bohm effect. An electron biprism and a standard electron microscope have been used for the experiments. (Author/GA)

Describes various simple methods of estimating 2V in thin sections which do not require specialized equipment. (SL)

Describes current research to determine if newborn infants can discern parents from strangers. An infrared detection technique has found that three to five week old infants focus on the edges of faces while older infants look more into the other person's eyes. Increased eye observation is beleived to be associated with parental identification. (CP)

Describes a science activity which allows secondary level students to discover the law of refraction. (SL)

Describes an experiment investigating the polarization characteristics of light scattered from a dielectric cylinder. (SL)

For one optical scientist, Harrison Barrett, the decision not to accept funding for research related to the Strategic Defense Initiative has meant giving up a major part of his work in optical computing. (MSE)