Provides an up-to-date summary of the state of the science in the field of applied atomic fluorescence spectrometry. (SL)

Presents teaching notes on the topics of powers of ten notations, physical chemistry projects involving natural products, calorimetry, and solar energy, and learning organic chemistry by playing cards. (SL)

Describes a series of activities which will demonstrate electrostatic phenomena. (CP)

Discusses the use of thin-layer chromatography (TLC) in the chemical laboratory as a quantitative method for determining the molecular weights of organic compounds. Describes a simple method which provides an illustration of the importance of polarity on solubility and demonstrates the effectiveness of TLC as a quantitative tool. (TW)

Describes how to construct an electronic device to be used in conductivity experiments using a 35 millimeter film canister, nine volt battery replacement snaps, a 200-300 ohm resistor, and a light-emitting diode. Provides a diagram and photographs of the device. (TW)

Discusses issues related to the physics concepts/topics needed by health professionals, suggesting that medical students can better understand how the body works by completing meaningful physics courses. Also addresses related concerns expressed by medical students and faculty. A list of 41 physics topics cross-referenced to medical topics is…

Outlines an activity in which students clarify choices among personal and ecological values. Variables (including concerns of the natural environment and personal income) are rated from high to low within a total constraint set by the instructor. Uses of the activity in a college geology course for nonscience majors are discussed. (DH)

Provides an overview of an experiment on reaction kinetics of the anthracene-hydrogen system. Includes a description of the laboratory equipment, procedures, and data analysis requirements. Points out the advantages of the recommended technique. (ML)

Explores the use of the poster as a form of scientific communication, and its relationship to the published paper, the abstract, and the oral communication. Suggestions for size, format, and layout for posters are presented. Reviews of two booklets on posters are printed at the end of this article. (TW)

Reviews approaches taken in meeting the design requirements in engineering programs. Highlights the value and applications of student involvement in design projects. Explains the features of an engineering case and advocates their use as an alternative or supplement to design projects. (ML)

Reviews methods of determining apparent dip and highlights the use of a device which consists of a nomogram printed on a protractor. Explains how the apparent-dip calculator-protractor can be constructed and outlines the steps for its operation. (ML)

Reviews trends in laboratory safety found in both industrial and academic situations. Reports that large industrial labs generally have excellent safety programs but that, although there have been improvements, academia still lags behind industry in safety. Includes recommendations for improving lab safety. (ML)

Describes a simple undergraduate experiment in chemistry dealing with the "solvent effects" in nuclear magnetic resonance (NMR) spectroscopy. Stresses the importance of having students learn NMR spectroscopy as a tool in analytical chemistry. (TW)

Describes techniques for collecting and recognizing adult mosquitoes. Discusses the six genera of British mosquitoes and provides a key for their identification. (CW)

Reviews major developments in areas that are at the cutting edge of biological research. Areas include: human anti-cancer gene, recombinant DNA techniques for the detection of Huntington disease carriers, and marine biology. (CW)