A science toy sometimes called the "magnetic spinner" is an interesting class demonstration to illustrate the principles of magnetic levitation. It can also be used to demonstrate Faraday's law and a horizontally suspended physical pendulum. The levitated part contains two circular magnets encased in a plastic housing. Each magnet stays…

The objective of this paper is to design a train of tubular reactors that use a methane feed to produce hydrogen of the desired purity so that it can be utilized by a fuel cell for automotive applications. Reaction engineering principles, which are typically covered at the undergraduate level, are utilized to design this reactor train. It is shown…

Describes activities dealing with the surface tension of water designed to capture interest and raise questions in students. (BR)

Outlines the construction, basic principles, calibration, and laboratory application of a device for the investigation of static charge phenomena. (GS)

Describes an easily-implemented experiment in which a moderately complex relation between dependent and independent variables is involved. (Author/GS)

Describes an experiment suited for use in an advanced laboratory course in particle physics. The magnetic moment of cosmic ray muons which have some polarization is determined with an error of about five percent. (Author/GS)

This publication includes more than 470 abstracts of papers scheduled to be presented at a chemical education conference. Topics of the papers include: (1) human impact on the environment; (2) technology; (3) forensic science; (4) paper chemistry; (5) computer interfacing, software, videodisc and graphics; (6) faculty enhancement programs; (7)…

John Reiff's conceptual framework regarding conflicting views of peace provides insight into interpersonal communication which can be successfully applied to conflicts in writing conferences and has already been used at the Colorado College Writing Center. First, a tutor or writer using the "Peace through Strength" frame of reference…

This unit on aerobic sludge digestion covers the theory of the process, system components, factors that affect the process performance, standard operational concerns, indicators of steady-state operations, and operational problems. The instructor's guide includes: (1) an overview of the unit; (2) lesson plan; (3) lecture outline (keyed to a set of…

This manual contains the textual material for a single-lesson unit on aerobic sludge digestion. Topic areas addressed include: (1) theory of aerobic digestion; (2) system components; (3) performance factors; (4) indicators of stable operation; and (5) operational problems and their solutions. A list of objectives, glossary of key terms, and…

This instructor's guide contains materials needed for teaching a two-lesson unit on trickling filters. These materials include: (1) an overview of the two lessons; (2) lesson plans; (3) lecture outline (keyed to a set of slides accompanying the unit); (4) overhead transparency masters; (5) student worksheet (with answers); and (6) two copies of a…

The textual material for a unit on trickling filters is presented in this student manual. Topic areas discussed include: (1) trickling filter process components (preliminary treatment, media, underdrain system, distribution system, ventilation, and secondary clarifier); (2) operational modes (standard rate filters, high rate filters, roughing…

This instructor's guide contains materials needed to teach a two-lesson unit on the structure and components of facultative lagoons, the biological theory of their operation, and factors affecting their operation. Control testing recommendations, maintenance guidelines, and troubleshooting hints are also provided. These materials include: (1) an…