Describes an apparatus and procedure for conducting an undergraduate laboratory experiment to quantitatively study the Hall effect in a plasma. Includes background information on the Hall effect and rationale for conducting the experiment. (JN)

Describes the use of solar cookers in the science classroom. Includes instructions for construction of a solar cooker, an explanation of how solar cookers work, and a number of suggested activities. (DS)

Describes and evaluates the fabrication of an easily constructed and inexpensive stop-flow system using commercially available components. (CS)

This article describes recent progress in chemical synthesis which depends on comparable advances in other areas of chemistry. Analysis and theories of chemical structure and reactions are determinants in progress in chemical synthesis and are described also. (Author/SA)

Described is an inexpensive and safe laboratory experiment that accurately duplicates the shapes and structures of simple impact craters using fireplace ash, finely ground charcoal, and an air gun. (Author/DS)

Presents an experiment involving photochemical legand displacement on a metal carbonyl, separation of the product mixture by chromotography, and identification of the components by use of infrared spectroscopy and group theory. The chromatography and spectroscopy are combined as complementary tools in this experiment. (Author/JN)

Describes a method to detect the presence of microgram quantities of nearly any metal in samples of alloys, minerals, water, and air. This chemical-spot testing technique requires no elaborate equipment and can be done by an amateur. (SK)

Reviews the history, nomenclature, theoretical background, and construction of batteries. Compares the performance of different battery types. (JN)

Describes a nuclear debris collector which removes trace substances from the lower atmosphere during rainfall. Suggests that the collector could be implemented into courses at various educational levels and could result in developing a network for monitoring the geographical extent of nuclear contamination. (Author/SA)

Describes ideas used to introduce the Australian Science Education Project (ASEP) for the students of Henley High School in Australia by helping students to gain access to lab equipment, facilities and manuals with a minimum of teacher direction. (HM)

Describes laboratory experiments of a chemistry course on advanced process control. The equipment for the process around which these experiments were developed by the University of Louisville was constructed from data provided by Exxon Oil Company. (HM)

Describes simple modifications that will permit external triggering of certain electronic timers, thus allowing their use in experiments which require greater precision than was possible with inexpensive apparatus. (GA)

This paper, presented at the conference on the role of the laboratory in physics education which was held in Oxford, England in July 1978, describes how a Malaysian University has presented electronics and the laboratory work as a forced component in physics curriculum. (HM)

A description of an apparatus for demonstrating the trajectory of a charged particle, is given. A photograph of the equipment used in the demonstrations accompanies the text. (SA)

A review is given of electronic environmental meters available for use in schools. Included are conductivity, oxygen, pH, and temperature meters. Chemical test papers and kits for use in environmental studies are included. (BB)