Describes how one logical scheme for the gearing for a multi-speed touring bicycle leads to a set of gear ratios which increase in an exponential function. (BT)

Describes a two-hour physics laboratory experiment modeling the phenomena of eclipsing binary stars developed by the Air Force Academy as part of a week-long laboratory-oriented experience for visiting high school students. (BT)

Described is a three-week unit on stellar evolution and cosmology taught as part of a one-year introductory high school physics course for seniors. Prerequisite topics necessary for a student's understanding of the material and topics covered during the unit are presented. (BT)

Describes a simple demonstration that illustrates the nature of isotropic substances by tearing newsprint, magazines, and wrapping paper. (BT)

A judge for the physics projects for the 1979 International Science and Engineering Fair describes many of the more popular science projects. Projects described include the following: carbon dioxide and helium-neon lasers, reverse flame investigations, holography, construction of a magnetic bottle to confine plasma, and aerodynamic drag. (BT)

Describes a type of individual laboratory-activity examination developed for use in an undergraduate general physics class whose enrollment was more than 100 persons. Test preparation, procedure, evaluation, and outcomes are discussed. (BT)

Describes an experiment in which an air table is used to measure the moment of inertia of air pucks with various radii and mass loadings. (BT)

Describes an experiment on heat that utilizes only a styrofoam cup of coffee and a soda straw thermometer. (BT)

A scientist explains how commercial smoke detectors work. (BT)

Six different pieces of physics apparatus are described: Telsa Coil for instant ignition of sodium arc lamps, Timekube, Magnetic Maps of the United States, a slinky with vertical mounting, a wave generator power supply, and a long-period timer power switch. Price and supplier are included. (BT)

Discusses the existence of matter in smaller groups known as clusters. Applications of the findings in scientific studies are presented as they relate to technology. (SA)

Discusses the "neo-Piagetian" concepts of Juan Pascual-Leone which are present in Piaget's theory. The concepts presented are the repertoire of schemes, mental processing capacity, and field dependence-independence. (Author/SA)

A professor discusses the advantages and disadvantages of teaching a physics class in a large research-oriented university. Various innovative teaching techniques and the ways in which they benefit the students, are presented. (SA)

Describes a scheme for teaching physics in secondary schools. Included is a brief description of the scheme as it was tested in a Yugoslavian secondary school. (SA)

Describes a physics laboratory for college students, in which the students participate in a firsthand noninertial experience. The equipment and problems are described. (SA)