Illustrates a method by which individual students or small groups can make a compact, self-sufficient system supplying all the growth needs for bean sprouts. Outlines several activities that can be completed while the bean sprouts are growing. (DH)

Sixth graders built working "robots" (or grasping bars) for remote control use during a unit on simple mechanics. Steps for making a robot are presented, including: cutting the wood, drilling and nailing, assembling the jaws, and making them work. The "jaws," used to pick up objects, illustrate principles of levers. (DH)

Proposes an analog circuit for use in sedimentation analysis of finely divided solid materials. Discusses a method of particle size distribution analysis and provides schematics of the circuit with list of components as well as a discussion about the operation of the circuit. (JM)

While students are able to cope with the slide-wire Wheatstone bridge, the slide-wire potentiometer has had a long history of confusing and frustrating elementary physics students. Therefore, a new approach for teaching and using the potentiometer has been developed. This approach is described. (JN)

Provides a detailed description for the construction of equipment needed to investigate acid/base equilibria through the measurement of pH and potentiometric titrations. Suggested experiments and calibration techniques are explained. This information helps to solve the problems of inadequate, expensive equipment required for A-level chemistry…

Discusses new solid-state transducers, arrays of nonspecific detectors, hardware and firmware computational elements, and other devices that are transforming modern analytical chemistry. Examples in which microelectroic sensors are used to solve 14 problems are included. (JN)

Describes: (1) a microcomputer demonstration of autocatalysis; (2) a safe alternative to ethanol and methanol; (3) a simple condenser for test-tube reactions; (4) a new procedure for studying the magnetic properties of transition metal compounds; (5) plasticization of the polymer PVC; and (6) some thoughts on polybasic acids and their salts. (JN)

The Educational, Scientific, and Cultural Materials Importation Act of 1966 mandates duty free entry of equipment into the United States under certain conditions. The decision in the University of North Carolina v. United States Department of Commerce endorses the independence of American scientific research from one form of government control.…

Reports results of a survey of college professors (N=146) on the present use of chemical instrumentation in undergraduate chemistry curricula of four-year colleges and universities in the United States. Uses in general, organic, analytical, physical, integrated, and research chemistry courses are noted. (JM)

Describes an experiment designed to acquaint students with the theory and applications of anodic stripping voltammetry (ASV) as well as such ASV problems as contamination associated with trace analysis. The experimental procedure, instrumentation, and materials discussed are designed to minimize cost and keep procedures as simple as possible. (JM)

Presents an experiment in thermometric titration used in an analytic chemistry-chemical instrumentation course, consisting of two titrations, one a mixture of calcium and magnesium, the other of calcium, magnesium, and barium ions. Provides equipment and solutions list/specifications, graphs, and discussion of results. (JM)

Discusses a low-cost apparatus for measuring moment of inertia utilizing an interval timer, induction coil, battery eliminator, and ball bearing mounted disk. Also provides a method for demonstrating vectors using a cardboard box and a piece of string. (JM)

Describes the plan submitted by the Nuclear Science Advisory Committee to the Department of Energy and National Science Foundation urging construction of an ultrarelativistic heavy-ion collider designed to accelerate nucleon beams of ions as heavy as uranium. Discusses the process of selecting the type of facility as well as siting. (JM)

Presents a novel approach to identification of unknown alcohols using experimental measurements of boiling point and viscosity which are easily obtained without expensive equipment of instrumentation. Provides instructions for preparing capillary viscometer, listing special hints for obtaining good results. (JM)

Examines present and future applications of computers in high-energy physics. Areas considered include high-energy physics laboratories, accelerators, detectors, networking, off-line analysis, software guidelines, event sizes and volumes, graphics applications, event simulation, theoretical studies, and future trends. (JN)