Presents the construction, operation, and theory of a Sargent-Welch scattering apparatus. Procedures for using the apparatus are also presented for high school teachers. (HM)

Deals with the conversion of electronic hand calculators to timing devices. This article illustrates a conversion of a rather versatile calculator by means of simple and inexpensive circuitry. (HM)

The author describes, in a highly personal manner, physics teaching in a rural school. Topics detailed include: program descriptions, teaching methods, textbook selection and adoption procedures, teaching load, and the problems associated with teaching in a school district with limited funds. (BT)

Examines Drude's classical (1900) theory of electrical conduction, details the objections to and successes of the 1900 theory, and investigates the Quantum (1928) theory of conduction, reviewing its successes and limitations. (BT)

Examines the relationship between climatic change and carbon dioxide from the historical perspective; details the contributions of carbon-based fuels to increasing carbon dioxide concentrations; and using global circulation models, discusses the future impact of the heavy reliance of our society on carbon-based fuels on climatic change. (BT)

Describes the Career Oriented Pre-Technical Physics (COPP) curriculum. This curriculum, comprising 29 modules, uses a hands-on, practical, nature to stress the career-vocational aspects of physics. Students design their personal curricula and proceed at their own pace. Evaluative information, comparing this program with other physics curricula, is…

Using practical applications of the principles of elementary physics, the author details how beekeepers can monitor the weight of their colonies. The weighing technique described involves no costly equipment, is not limited to a single colony, and is developed from the principles of physics for rigid body equilibrium. (BT)

Some fundamental relations that were strangely presented in a recent edition of a high school physics text (Physics: Fundamentals and Frontiers) are discussed. Relations discussed include: negative acceleration, vector components, and analyzing the interaction of a spring pendulum suspended from another spring pendulum. (BT)

Discusses the existence of spirals in nature in general, supplying many examples, and explains how a particular organism, Phycomyces, accomplishes this feat. (GA)

Discusses the postage rate increases in recent years and notes that if the trend continues the rate will reach three dollars an ounce by the year 2017. (GA)

Describes the viewing sessions and the holograms of a holographic road show. The traveling exhibits, believed to stimulate interest in physics, include a wide variety of holograms and demonstrate several physical principles. (GA)

Describes a research project undertaken by physics undergraduate students to monitor particulate air contamination in Ponce, Puerto Rico, and to determine the meteorological factors which contribute to it. (GA)

States and discusses some confusing and misleading statements found in an introductory physics textbook for high school students on electric currents and their magnetic fields. (GA)

Explains how to use sticky tape, a soda straw, and a little water to build a device which will demonstrate Charles' law as well as give the temperature. (GA)

Traces the early history of an experiment, the launching of a copper or aluminum ring above the pole of an alternating current magnet at switch-on, that was conducted by Elihu Thomson in the last century and presents a simple qualitative explanation of the effect involved. (GA)