Described are a method of cultivating Euglena, a method for presenting and solving mole equations, and a design of a simple solar collector. (SL)

A precise method of determining absorption maxima where Gaussian functions occur is described. The method is based on a logarithmic transformation of the Gaussian equation and is suited for a mini-computer. (MR)

Reports on apparatus for generating Lissajous figures, projecting Poisson's spots, photographing diffraction patterns, electric heating, and projecting moving longitudinal waves on an oscilloscope. (SL)

Provides a list of scientific laboratory instruments and equipment and the names and addresses of their manufacturers. Instruments appear in alphabetical order with the names of manufactures listed below each. (SL)

Provides an alphabetical listing of manufacturers of scientific equipment with addresses and phone numbers. (SL)

Reviews six items of science equipment, including power supplies, timers, and a watt meter. (SL)

Presents a differential thermal analysis system constructed mainly from commercially available modular units. (SL)

Reviews electronic instruments utilized in medicine for temperature measurement, pressure measurement, and flow measurement. (SL)

Describes the present state of the art of instruments in the field of atomic absorption (AA) spectroscopy. (SL)

Describes school science activities in which students race model cars built from mousetraps, construct inventions using discarded junk, and compete in an egg dropping contest. (SL)

Describes laboratory equipment which has been modified to accommodate visually handicapped students enrolled in regular university level laboratory science courses. (SL)

Introduces 12 activities for teaching science. Includes one way to begin the school year, peristalsis demonstration, candy-coated metrics, 3-D constellations, 35-mm astrophotography, create an alien organism, jet propulsion, computer programs for pendulum calculations, plant versus animal, chocolate chip petroleum, paper rockets, and…

Traces the history of soil mechanical analysis. Evaluates this history in order to place current concepts in perspective, from both a research and teaching viewpoint. Alternatives to traditional separation techniques for use in soils teaching laboratories are discussed. (TW)

Presents two simple techniques for physics demonstrations: (1) a projection lens system for oscilloscopes which uses an inexpensive surplus lens and enables the entire class to observe the screen; and (2) a polarized optical "Cheshire cat" which uses the overhead projector and Polaroid sheets. (JN)

Describes a demonstration in which gaseous ammonia and hydrochloric acid are used to illustrate rates of diffusion (Graham's Law). Simple equipment needed for the demonstration include a long tube, rubber stoppes, and cotton. Two related demonstrations are also explained. (DH)