Describes an experiment wherein simple gamma-ray detection and analysis techniques were utilized to study radioactivity in local precipitation. (Author/SL)

Discusses the need of introducing corrections due to wire stiffness arising from end constraints and wire axis distribution curvature in the measurement of ac electrical frequency by exciting transverse standing waves in a stretched steel wire. (SL)

Presents an apparatus for demonstrating two-dimensional random motion suitable for illustrating molecular phenomena. Three specific uses are presented. (SL)

Describes an experiment for estimating the half-life of thorium-232. (SL)

Presents results of a trend survey of the present and planned use of electrical and electronic instruments. Microprocessors were found to have the highest predicted growth rate of all instruments included in the survey. (SL)

Describes the mobile spectrosocopy laboratory program operated by the Department of Chemistry, University of Arkansas, which gives small college chemistry departments access to high cost spectrographic instruments mounted in a mobile van. (SL)

Includes procedures for demonstrating anaerobic respiration in peas, isolating virgin Drosophila females, solving mortality problems in young gerbils, measuring dissolved oxygen, constructing models for transpiration and DNA molecules, freezing chick embryos, mixing nutrient media, illustrating Darwinian ecological principles, and detecting…

Describes the Anthropology Learning Centers Enrichment Program developed by volunteer parents for children achieving at or above grade level in grades three through six in a Michigan elementary school in the period February-May, 1975. (Author/JM)

A science program in which students were encouraged to select their own project goal as well as the apparatus to accomplish this goal was developed and tried in two 5th grade classes. (Author)

An introductory biophysics course for science students who have previously taken two quarters of noncalculus physics is described. Material covered emphasizes the physical principles of sound, light, electricity, energy, and information. (Author/CP)

The authors give directions for comparing the rates of zero and first order chemical reactions to the rate of flowing water in simple physical systems. They also show how to compare chemical equilibrium to the level of water in a u-shaped tube. (AJ)

Describes a university level laboratory science course designed for visually handicapped students. (SL)

Describes a method of calculating the power applied to an electric lamp by using a calorimeter to measure the energy radiated by the lamp. (SL)

Computer simulations are becoming more feasible for use in the teaching of physiology. Discussed are the advantages and limitations of using computer assisted instruction. Also given, are criteria for evaluation and the appropriateness of their application. Illustrations explaining the limitations of simulations are included, as well as a…

This article describes the development and use of an audiovisual center at the University of Trieste in Udine, Italy. The hardware and software of the Center are described in detail. The courses in French, Spanish, Russian, English, and German are listed. (Text is in Italian). (CFM)