Discusses the origin and existence of sediment layers in the Atlantic Ocean. (CP)

Describes the general thrust of deep-sea microbiology research. Discusses the existence of deep-sea food chains. (CP)

Reports on scientific research with rats which has found that electrical stimulation in areas of the brain can trigger behavioral effects similar to those produced by narcotic drugs. (CP)

Two physics experiments are described, One, involving a laboratory cart accelerated along a level surface, examines the concept of inertial mass in translation and the other, using a solid cylinder, measures the moment of inertia of a wheel. Equations and illustrations are included. (MA)

Discusses how the fast Fourier transform can be used as a teaching tool to introduce spectral analysis of sampled data by interactive minicomputer experiments. (MLH)

Describes an experiment on Doppler effects using air cars on a linear air track and a homodyne Doppler radar system. (SL)

Presented is a laboratory exercise that utilizes the natural yeast carbonation method of making homemade root beer to study fermentation and the effect of variables upon the fermentation process. There are photographs, a sample data sheet, and procedural hints included. (Author/MA)

Reviews various science activities investigating polarized light. (SL)

Discusses selected bioinorganic aspects of carbonic anhydrase and describes experiments that will reinforce the students' understanding of the presence and essential role that metal ions have in some biological systems. (SL)

Describes a method for demonstrating harmonic motion which utilizes a low frequency oscillator and three oscilloscopes. (SL)

Describes an experimental arrangement for investigating optical barrier penetration. (SL)

Discusses limitations and corrections to be made in physics experiments involving the investigations of drag and terminal velocity on spheres falling through a liquid in accordance with Stokes' law. (SL)

Procedures are provided for a flame emission experiment which covers five areas in a single laboratory exercise. These areas are: (1) the flame emission technique; (2) calibration plots; (3) interferences; (4) indirect flame emission analysis; and (5) techniques of removing interferences. Typical results obtained are discussed. (JN)

Experiments involving the coupling of alkyl and aryl halides in the presence of lithium metal and ultrasound are described. The experiments illustrate classical Wurtz and Fittig reactions in addition to being a convenient application of organic sonochemistry. (JN)

The semipermeability of biological membranes is simply and directly illustrated in an experiment which uses ovolecithin liposomes as convenient models for biological membranes. Background information and procedures used are provided. (JN)