Describes modification of a gas viscometer to produce a low cost instrument with high precision and safe design. Three tungsten electrodes are mounted in the viscometer using graded glass seals and a ball trap is inserted between mercury reservoir and all external stopcocks. Also describes modifications in experimental procedures. (Author/JN)

Describes a 3.33-cm wavelength (9 GHz) microwave system that achieves a high overall signal sensitivity and a well-collimated beam with moderate-size equipment. The system has been used to develop microwave versions of the Michelson interferometer, Bragg reflector, Brewster's law and total internal reflection, and Young's interference experiment.…

Describes a solution calorimetry apparatus useful in measuring heats of metal ion-ligand reactions. (SK)

Described is an apparatus for determining the Curie temperature of a Ferromagnetic material which enables large specimens to be heated up to a maximum of 1100K in 20 minutes. Included is the theory, magnetic circuit apparatus, electrical circuit, and results using this apparatus. (DS)

Describes a simple apparatus that measures atmospheric pressure within 20 percent of the accepted value using a syringe, spring scale, and a ruler. (MLH)

Provides the apparatus setup, experimental method, necessary formulas, and references for three measurement experiments: (1) "Determine the Magnetic Induction of a Coil with a Hall Element"; (2) "Measuring Magnetic Force and Magnetic Field of Small Permanent Magnets"; and (3) "Measurements of Sound Velocity by Means of PZT" (piezoelectric…

Develops a manostat which is simple and inexpensive to construct and operate, compact and rugged in design, useful over a wide pressure range, and well adapted for practical usage. Provides methodology, a diagram, and some operating suggestions. (MVL)

Describes the theory and application of an atomic fountain which pushes the atoms by laser pulses. Discusses the applications in measuring atomic properties and in building an atomic clock. (YP)

Evaluates the technical efficacy of the V-Scope in measuring motion produced by a phonograph turntable, a template furnished by the manufacturer, a free-fall apparatus, some pendula, a gyroscope, and three air tables. Concludes that the V-Scope gives excellent results and is easy to use. (MDH)

Describes experiments with electrostatics that are convenient for classroom demonstrations or laboratory activities. These experiments use a Kelvin balance and a relatively inexpensive electronic scale with 0.01-g sensitivity and essentially stationary pans. (WRM)

Examines the barriers within the environmental technology industry to adopting the use of field analytic instrumentation. Barriers are discussed in three main categories: legislative, regulatory, and institutional. A table lists the barriers and their impact on the adoption of new technologies. (MDH)

A major goal of the manufacturing industry is increasing product quality. The quality of a product is strongly associated with the condition of the cutting tool that produced it. Catching poor tool conditions early in the production will help reduce defects. However, with current CNC technology, manufacturers still rely mainly on the operator's…

With the rising rate of overweight among children, it is more important than ever for students to spend an optimal amount of time participating in physical activity. As a means of measuring participation in physical activity, pedometers have become increasingly more common in the physical education classroom. This article shares tips for using…

Describes techniques and equipment intended to both improve laboratory measurements and also form a background for more advanced work by introducing the concepts of electronic and digital circuits. (GS)

One in a series of core instructional materials for apprentices to use during the first or second years of apprentice-related subjects training, this booklet deals with basic measurement. The first section consists of an outline of the content and scope of the core materials as well as a self-assessment pretest. Covered in the four instructional…