Briefly discusses new instrumentation in the field of analytical chemistry. Advances in liquid chromatography, photoacoustic spectroscopy, the use of lasers, and mass spectrometry are also discussed. (CS)

Guidelines are presented to help the classroom science teacher effectively deal with handicapped students. (SA)

Describes the following: a low-pressure sodium light source; a design of hot cathodes for plasma and electron physics experiments; a demonstration cart for a physics of sound course; Bernoulli force using coffee cups; a spark recording for the linear air track; and a demonstration of the effect of altering the cavity resonance of a violin. (GA)

Explains how to use glass tubing to form a simple microscope; how to construct an over-voltage protection circuit; and how to demonstrate electromagnetic effects with a coil and rubber bands. (GA)

Suggested specifications for microscopes for various applications are given. A discussion of the ways of meeting these specifications in practice is illustrated by current models from British and foreign manufacturers. (BB)

Reviews new science equipment and products for the laboratory. Includes hand-held calculators, fiberglass fume hoods, motorized microtomy, disposable mouse cages, and electric timers. Describes 11 products total. Provides manufacturer name, address, and price. (MA)

Describes how to convert a bicycle pump into a vacuum pump by reversing the piston and replacing or removing the one-way valve. (MLH)

Presents an activity in which race cars are designed and constructed out of edible materials. Students explore relationships between speed, distance, and time using both math and science. Includes a chart that shows alignment with the National Science Education Standards. (DDR)

Describes several ways to partially levitate permanent magnets. Computes field line geometries and oscillation frequencies. Provides several diagrams illustrating the mechanism of the oscillation. (YP)

Describes the use of a digitized video image system in conducting radically different projectile experiments. Presents a detailed example of its use and discusses the advantages and disadvantages of using digitized video images. (JRH)

Describes an experiment designed to help understand the effect of the curvature of the laboratory equipment support (cylindrical rod instead of knife-edge) on the frequency of oscillation of pendula. (ZWH)

Presents experiments that avoid using mercury by using pressure transducers to investigate the gas laws. (Author/JRH)

Describes hardware that enables the use of an IBM PC microcomputer as a frequency meter or a counter by using the parallel printer port. Eliminates the 16-bit time-day counter through the use of an external time base that can be conveniently set depending on the desired frequency range. (JRH)

Provides instructions to make a device able to simulate the typical light pulses seen by a photomultiplier tube. Comments on circuit theory, circuit operation, and pedagogical value. (MVL)