Describes a surgical technique for performing pinealectomics, applicable to classroom and laboratory studies, by using a head-holding device for small animals and a flat dissecting tray outfitted with holding straps for larger animals. (CC)

Describes experiments on flash photolysis and relaxation kinetics for college students using any standard photographic flash. List of experiments with explanations are included. (PS)

Experiments give students a practical awareness of pollution in its different forms. (RK)

Describes the theoretical principles and experimental arrangement in determining the transmission and reflection coefficients for polarizations which are parallel and perpendicular to the plane of incidence. Indicates an error of the order of five percent in the results obtained. (CC)

An analog solution was obtained for the Nenst-Planck and Poisson equations which describe the ion concentration across a simple membrane held at a potential difference. The electric field variation within the membrane was also determined. (Author/TS)

To learn if the experience of small group democracy in a training laboratory generalizes to the more broadly theoretical issues of ideology, a before and after experimental design was utilized at a college training laboratory to gather more direct information. Results showed highly significant shifts in democratic directions on each of four scales…

Article describes new materials testing laboratory course which introduces the student to fundamental concepts of experimentation. (IR)

Describes and apparatus designed to generate and detect pulsed ultrasonics in solids and liquids over the frequency range 1-20 MHz. Experiments are suggested for velocity of sound, elastic constant and ultrasonic attenuation measurements on various materials over a wide temperature range. The equipment should be useful for demonstration purposes.…

Describes a simple photometer capable of measuring small light intensities over small areas. The inexpensive, easy-to- construct instrument is intended for use in a student laboratory to measure the light intensities in a diffraction experiment from single or multiple slits. Typical experimental results are presented along with the theoretical…

Reviews the techniques used by Rutherford in his experiments on thorium, and suggests ways for repeating and re-examining the experiments by capable sixth-form physics students. (LC)