Materials and methods are presented illustrating a modification of the Nakai/Glinsmann technique for comparing apparent formation constants for ADP-Mg and ADP-polyamine complexes. (Author/SK)

Describes experiment expanding on principles behind measuring efficiency of chromatographic columns and allowing calculation of parameters in the van Deemter equation. Easily accomplished in a three-hour period using a gas chromatograph in which gas flow can be changed and measured. Mathematical solutions can be attained with programmable…

An experiment using gas-liquid chromatography is discussed, introducing the student to concept of dead volume and its measurement, idea and use of an internal reference compound, and to linear relationship existing between measurements of a separation on two different stationary phases. (Author/SK)

The use of a logarithmic amplifier preceding an oscilloscope's vertical amplifier is described for physics teachers who want to demonstrate the exponential decay nature of some phenomena. (Author/SA)

Described is an experiment that explores the relationships between conscious motor activity and autonomic processes such as breathing, blood pressure, and heart rate. Procedures for the construction and calibration of ball ergographs are outlined. (CS)

Presents an experiment used in laboratory technician training courses to illustrate the quantitative use of infrared spectroscopy which is based on industrial and laboratory procedures for the determination of vinyl acetate levels in ethylene vinyl acetate packaging films. Includes three approaches to allow for varying path lengths (film…

Presents experiments to introduce students to the phenomenon of biological rhythmicity and to reinforce the fact that there are differences in the physiology of human beings. (Author/MA)

Examines the pitfalls of understanding and interpreting venous physiology. Includes techniques to measure reflex changes in capacity vessel pressure--volume characteristics. (MA)

Suggests teaching communication has led to wider use of communicative activities to create contexts for English uses. Cites use of music and photographs as valuable tools for stimulating conversation. (BK)

Compares and contrasts effects of two spectroscopic techniques on bromine and iodine vapor. (CS)

Recommends that science teachers make evaluations of chemical atmospheres in science laboratories so that serious health problems can be avoided. Uses data from methylene chloride to provide guidelines for understanding the effects of chemicals on the human body. (CS)

Describes an apparatus to be used in a visual presentation of simultaneous, independent motions and their resultants. The apparatus is best suited for representing a boat and stream, but could be modified to represent a plane in a moving air mass. (Author/DS)

Presents two experimental set-ups. The first demonstrates the law of Malus using a pair of Polaroid polarizers and a monochromatic light source with an interference filter. The second describes a modification of Hilton's apparatus to demonstrate the effects of the magnetic hysteresis on an overhead projector. (CS)

Contrasts the teacher-training goals of nineteenth-century laboratory schools with John Dewey's pioneering approach which has resulted in today's research- and experimentation-oriented laboratory schools. Explains why such schools have received criticism for lack of accomplishment. Outlines features of inquiry-oriented laboratory schools and…

Presents nine physics notes for British secondary school teachers. Some of these notes are: (1) speed of sound in a steel rod; (2) physics extracts-part four (1978); and (3) a graphical approach to acceleration. (HM)