In general chemistry laboratories, students learn practical laboratory skills through hands-on activities and are exposed to new scientific instruments. However, these instruments are often viewed as black boxes for various reasons, where students do not know how to use them or what the instruments are capable of. This tendency is likely to induce…

Describes research on in situ processing to develop necessary theory and understanding of the underground process to facilitate commercialization of a wide range of mineral deposits. Goal is to produce laboratory and computer-based tools to allow site evaluation based on field and laboratory measurements of mineral and associated overburdens.…

Discusses the problems of increased noise levels when using microcomputers as interfaces to chemistry laboratory instruments. Describes how to properly connect a laboratory instrument to a microcomputer's A/D converter board. Suggests how to obtain an analog signal free of interference noise. (TW)