In four experiments, immediate memory for sets of five sequentially presented pictorial stimuli was assessed by a two-alternative, forced-choice recognition probe. Suggests that immediate memory for pictures is determined by variables that increase or decrease processing demands, as is the case for verbal material. (Editor/RK)

Principles, methods, and materials for a laboratory experiment in the generation of methane gas as an alternative energy source are described and illustrated by an industrial arts professor and student for students in power and energy. (MF)

Describes a demonstration concerning the air pollution aspects of gasoline vapor which provides an estimation of the vapor pressure of test fuel, the molecular weight of the vapor, and illustrates a method of controlling the pollution. (SL)

Describes the use of a transparent rectangular box with transparent spheres to demonstrate the three dimension basic concepts of close packing. (SL)

Describes the use of inexpensive polarimeters in laboratory experiments for general chemistry courses. (SL)

Describes physics experiments and demonstrations on the measurement of electrostatic fields. (SL)

Describes a simple experiment to verify the reflectivity equations of Fresnel and for measurement of optical constants. (SL)

Describes an experimental verification of Stefan's law using commercial electric lamps. (SL)

Describes a freshman level laboratory course for physics or engineering students that introduces the various quantities determining the motion of compound pendulum systems. (SL)

Describes a holographic method of producing a picture of a real lens, objects, and the virtual image of the objects. (SL)

Reports on the Harewood Centre which has its origins in the West Riding experiment of seconding teachers to become educational social workers. (Editor/RK)

Describes a magnetic resonance laboratory experiment for a biochemistry course. (SL)

Describes several plasma physics experiments suitable for undergraduate physics laboratories. (SL)

Describes experiments for preparing compounds containing cooper and nickel in the +3 oxidation state. (SL)

Describes experiments with and preparation of Manganese (III) for demonstrating the reactions of ions from the first transition metal series. (SL)