Describes a method of calculating the power applied to an electric lamp by using a calorimeter to measure the energy radiated by the lamp. (SL)

Describes misleading statements and figures utilized in textbooks to describe and depict fundamental wave functions and properties. (SL)

Discusses the international symposium on chemical education held in Ljubljana, Yugoslavia, August, 1977. Included are the symposium's recommendations for future international action relating to the problems and needs of chemical education. (SL)

Proposes a simple solution to the problem of expressing graphically absolute configuration, racemic character, and relative configuration in molecules. As demonstrated by several examples, the proposed convention brings added clarity and simplicity to structural drawings and renders graphic displays of chiral molecules as explicit and information…

The environmental chemistry program at Vassar College consists of undergraduate- and graduate-level coursework in environmental chemistry, a research program, and a program of involvement with environmental problems in the Mid-Hudson area. Various aspects of this interdisciplinary, integrated program are discussed. (JN)

Discusses the basics of inexpensive modular synthesizers (which demonstrate various principles of sound). Topics considered include: oscillators and musical range; oscillator waveforms and characteristics; synthesizing simple musical sounds; and modulation and sweeping filter effects. Suggestions for purchasing or building synthesizer components…

Suggests using a "bed of nails" (array of nails on a board) as a resistance demonstration where steel balls pass through the lattice of nails like electrons through metal. Although weaknesses of Drude's electrical conduction model are noted, the activity is recommended since it clearly illustrates drift velocity. (DH)

Presents objectives, required readings, course outline, and bibliography for an engineering and morals course. Course topics include: history of technology; engineering as a profession; engineering ethics (with four case studies); and career choice. Emphases are on the foundation of and criteria for making moral decisions. (DH)

Examines the nature of selected traditional cosmological concepts among literate and nonliterate Nigerians. Findings indicate that the respondents, regardless of their status, hold both scientific and traditional notions of the universe. A preference for a scientific world view was evidenced by those who experienced a history/philosophy of science…

Proposes that identification keys provide an orderly strategy for the identification of igneous and metamorphic rocks in an introductory geology course. Explains the format employed in the system and includes the actual key guides for both igneous and metamorphic rocks. (ML)

Discusses four different methods for measuring self-inductance based on the definition of inductance, the alternative definition, phase difference and LC resonance. Provides circuit diagrams and typical oscilloscope traces. (YP)

Reviews research done on the nature of vision from a neurologic perspective. Proposes a multiplex filter model to explain patterns in the signals transmitted to the brain from the retina. Describes experiments done to test the model. (CW)

Shows how the thermodynamic condition for equilibrium in an isolated system can be derived by the application of Boltzmann's law to a simple physical system. States that this derivation could be included in an introductory course on chemical equilibrium to help prepare students for a statistical mechanical treatment presented in the curriculum.…

This discussion uses a more difficult reaction as the prototype to derive the standard equation for chemical equilibrium. It can be used by students who can understand and use partial derivatives. (CW)

This article presents the results of a study to identify problems and recommend solutions to training and education deficiencies of the environmental workforce for risk assessment and hazardous waste. Cites five recommendations developed as a result of a workshop held in March 1986. (Author/CW)