Describes an undergraduate physical chemistry experiment in which the kinetics of the various reactions involved in the flash photolysis of water are analyzed on a computer. (MLH)

Describes a straight-forward method of measuring the absolute value of the conductance of an electrolyte solution using direct current and applying Ohm's law. (MLH)

Suggests classroom projects for investigating the diversity of insects. (LS)

Describes how the principles of reactor analysis can be used to study human circulation. (MLH)

Describes an undergraduate experiment that provides instruction in nuclear magnetic resonance (NMR) spectroscopy, reaction rates, and the application of mathematical procedures. (MLH)

Describes a natural-products experiment involving steam distillation, solvent extraction, and spectroscopic identification. (MLH)

Describes a laboratory experiment in which the experimental data agree well with the empirical law. Demonstrates that transparent materials reflect light. (CP)

Presents experiments, demonstration, activities and ideas relating to various fields of physics to be used in physics courses in secondary schools. The use of a programable pocket calculator in A-level physics courses is among the activities described. (HM)

Describes children's reactions to chance and probability in a variety of experimental situations, using four different experiments from Piaget's work, to give a clearer picture of how children approach these ideas. (GA)

Describes experiments in ice physics that demonstrate the behavior and properties of ice. Show that ice behaves as an ionic conductor in which charge is transferred by the movement of protons, its electrical conductivity is highly temperature-dependent, and its dielectric properties show dramatic variation in the kilohertz range. (Author/GA)

Describes an experiment designed to measure the forces between charged parallel plates, and determines the relationship among the effective electrode area, the measured capacitance values, and the electrode spacing of a parallel plate capacitor. (GA)

Describes an apparatus which attempts to give a direct visual impression of the random detection of individual photons coupled with the recognition of the classical intensity distribution as a result of fairly high proton statistics. (Author/GA)