Discussed is a Doppler shift laboratory experiment for an introductory college physics course. Ultrasonic transducers and a digital phase detector circuit "black box" are used to overcome room noise and "standing waves" and to produce an observable frequency shift. (SL)

Described is a maternal-fetal model, operated by the student, to teach osmosis-diffusion to biology students. Included are materials needed, assembly instructions, and student operating procedures. (SL)

Presents the entire Advanced Placement Physics C Examination, intended to match the first two terms of a three-to-four term sequence of calculus-based physics courses for physical science or engineering majors. (MLH)

Discusses a 2-semester-hour experimental physics course utilizing a 0.5 MeV Van de Graaff accelerator. The course requires the completion of six or seven laboratory projects including complete written reports, and theory is emphasized only to the extent needed to understand the projects. (MLH)

Discusses textbook errors and alternative explanations concerning Planck's derivation of the distribution function for the energy density of black-body radiation. (MLH)

Describes a low-cost wave analyzer; how to convert an incandescant light bulb to an x-ray tube; how to use an electric toothbrush to generate waves; the use of a light-emitting diode as a point light source; how to rejuvenate helium-neon lasers; and calibration of an ammeter. (MLH)

Summarizes five papers presented at the Fourth Biennial Conference on Chemical Education that dealt with the impact of increased subscription costs of chemical information publications and ways of providing information services to students. (MLH)

Describes a computer program that generates a random string of amino acids and guides the student in determining the correct sequence of a given protein by using experimental analytic data for that protein. (MLH)

Reviews the principles of liquid chromatography with electrochemical detection (LCEC), an analytical technique that incorporates the advantages of both liquids chromatography and electrochemistry. Also suggests laboratory experiments using this technique. (MLH)

Describes the use of the magnetometer in an introductory undergraduate geology course. (SL)

Discusses the use of the System Dynamics technique in simulating a chemical reaction for kinetic analysis. Also discusses the use of simulation modelling in biology, ecology, and the social sciences, where experimentation may be impractical or impossible. (MLH)

Describes an undergraduate organic chemistry experiment in which papain is used as a catalyst for the stereospecific formation of an insoluble anilide from a racemic benzoylamino acid. (MLH)

Discusses the relationship between adsorption isotherms and elution peak shapes in gas chromatography, and describes a laboratory experiment which involves the adsorption of hexane, cyclohexane, and benzene on alumina at different temperatures. (MLH)

Discusses an undergraduate course which includes lectures, laboratory, and field trips and is designed for the interim winter semester. The course is interdisciplinary, involving a study of the biochemistry, pharmacology, and physiological significance of compounds from marine flora and fauna. (MLH)

Described is the construction and utilization of a Dewar assembly for measuring the heat of vaporization of liquid nitrogen. The device is fabricated from a thermos bottle replacement filler. (SL)