Describes construction/use of a device to simulate structures produced in fault zones of dominantly strike-dip motion. Apparatus modifications allow simulation of transtension and transpression as well as pure strike-slip fault motion. Illustrates formation of several structures using the apparatus, comparing them with natural examples. Includes…

Methods of preparing and characterizing modified electrodes are outlined and several applications are described. Topics include how electrodes are modified, characterization of such electrodes, and why it is necessary to modify electrodes. Reasons include use in electrocatalysis and display devices and in analytical/photoelectrochemical…

Describes a physical model that gives a good indication of the kinds of movements made by individual atoms in one plane of a cubic crystal lattice. (MLH)

Presents an exercise that involves construction of a model by high school students to demonstrate respiratory mechanics. Engages students in interactive learning and stimulates interest for future science study. Challenges students and teachers to build, manipulate, and discuss their experience during the investigation of respiratory mechanics.…

Describes the construction of an insulated wooden wall incubator that combines excellent temperature control over the usual operating range with easy electrical access, low cost, and a wide potential size range. Presents a temperature- monitoring circuit, designed to measure the small temperature variations within the incubator, which could…

Describes the construction and use of a machine to demonstrate centripetal force. Includes a lab activity for use with the machine. (DDR)

Describes the construction of a vernier scale made of chart paper that can be used to improve the readability of scales on burettes or graduated cylinders. (JRH)

Reports on a low-cost and unique molecular model set capable of generating a large number of structures for teaching and learning general chemistry. An important component of the kit is an 11-hole ball that gives tetrahedral, octahedral, trigonal, trigonal bipyramidal, and square planar symmetries. (WRM)

Presents a simple experiment to compare the performance of the PASCO Introductory Dynamics System with that of an Ealing student air track. Discusses the relative advantages of both. Concludes that for a wide assortment of motion activities in a low friction environment, or studies of frictional forces, the PASCO Introductory Dynamics System is a…

An attempt is made to find a solution to the occasional problem of a need for storing large numbers of graduated cylinders in many teaching and research laboratories. A design, which involves the creation of a series of parallel channels that are used to suspend inverted graduated cylinders by their bases, is proposed.

The increasing complexity of human body models enabled by advances in diagnostic imaging, computing, and growing knowledge calls for the development of a new generation of systems for intelligent exploration of these models. Here, we introduce a novel paradigm for the exploration of digital body models illustrating cerebral vasculature. It enables…

A variety of new instruments which better comply with new worker exposure standards is presented. The instruments tend to be relatively inexpensive, portable, and reasonably simple to operate. Various models are listed with price ranges, manufacturer name and addresses, and detailed descriptions of various models available. (EB)

Describes assembly of a moderately priced synchronized projector and cassette tape recorder using a single channel recorder with a tuned amplifier to separate voice and control tones. Construction requires familiarity with transistors and use of an oscilloscope with an audio signal generator. A picture as well as schematics is provided. (GH)

Describes how to clear water from gas taps in the laboratory using simple equipment. Includes a diagram of the equipment set-up. (BR)