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)

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)

Describes the application of basic dynamics of rotations to the case of turning on skis, first without and then with external torques. Various elements are combined in different techniques and suggestions for further extensions and a list of laboratory exercises based on skiing are included. (DF)

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)

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…