Described is a mechanically driven device for generating three-dimensional harmonic space figures with different frequencies and phase angles on the X, Y, and Z axes. Discussed are apparatus, viewing stereo pairs, equations of motion, and using space figures in classroom. (YP)

Evaluates 5 courseware packages covering the topics of simple harmonic motion, 7 packages for wave motion, and 10 packages for sound. Discusses the price range, sub-topics, program type, interaction, time, calculus required, graphics, and comments of each courseware. Selects several packages based on the criteria. (YP)

Describes three experiments with an air table to produce a centripetal force. Provides some diagrams and pictures of the apparatus. (YP)

Discusses the general construction of an air track. Describes three demonstrations including elastic collision, forced oscillators, and coupled oscillators. Provides a diagram and four pictures. Suggests how a similar exhibit could be constructed with a modest budget. (YP)

Answers the question about the crown effect of a liquid drop. Describes the concepts of surface tension, irregularities, and pinch effect. (YP)

Describes the teaching practices of one exemplary physics teacher. Identifies those teaching practices which can be considered exemplary and worthy of attention and analysis by physics teachers and teacher educators. Reports four assertions by the data from observations and interviews with teachers and students. (YP)

Describes how to make and use an inexpensive video disc of physics demonstrations. Discusses the background, production of the disc, subject of the disc including angular momentum, "monkey and the hunter" experiment, Doppler shift, pressure of a constant volume of gas thermometer, and wave effects, and using the disc in classroom. (YP)

Describes the nature of a saturation curve and discusses several examples including the number of American scientists, population, Dow industrial index, and the national debt. (YP)

Introduces three laboratory exercises which develop an understanding of principles of mechanics by using examples of bicycle operation: Newton's laws, statics and dynamics, and energy relationships. Describes related theory and laboratory procedures with diagrams and pictures in each exercise. (YP)

Emphasizes firewalking as a good illustration of basic concepts in thermodynamics. Describes the basic principles of firewalking and other factors including the cooling of the surface embers, moisture of the feet, thick skin on the feet, tolerance for pain, and other uncontrolled factors. (YP)

Presents a mechanics problem illustrating that Newton's second law and the linear conservation of momentum principle must be used in an inertial reference frame. Provides an analysis of the problem. (YP)

Describes a graphical method stressing the asymmetry of the classical Doppler effect in a one-dimensional case. (YP)

Introduces a computer solution of the oscillation of a mass suspended by a spring in a viscous liquid. Describes the equations of motion, spreadsheet solution, copying the formulas, plotting the results, and extending the applications. Presents spreadsheet and physics formulas for the step-by-step solution and spreadsheet solution. (YP)

Discusses how a spreadsheet might be used in an introductory physics laboratory. Describes three categories of spreadsheet uses, advantages of spreadsheet, layout, accuracy, and modifications. Gives an example of the variable mass rocket problem with typical display. (YP)

Examines the effect of solar radiation on colored shingles. Describes the experimental procedure, results, and discussion. Presents a picture of the experimental arrangement and three graphs of data measured at different dates. (YP)