Discusses the development of the Rutherford-Bohr atom. Indicates how the objectives of the historian may differ from those of the retrospecting or historicizing physicist. (Author/SK)

Describes a technique whereby qualitatively correct models of differentially rotating degenerate stars may be constructed by simple methods available to undergraduate students. (Author/JN)

Presents an elementary formulation of the work expenditure corresponding to walking, the most common physical exercise. The model described is included in a physics course for freshmen in physical education and physical therapy. (Author/JN)

Describes how many of the geometrical and physical properties of the binary elastic collision of two particles can be represented by an isoceles trapezoid in the velocity space. (BB)

A model of Brownian motion is discussed which includes viscosity effects. The model lends itself to Monte Carlo simulation and thus is suitable for an elementary physics laboratory experiment. (BB)

Discusses the paradoxes that can result when physical examples lead to infinite series. Two examples are presented: the Madelung energy of a one-dimensional array of alternating positive and negative charges, and a point charge between infinite parallel plates. (BB)

An algebraic definition of time differentiation is presented and used to relate independent measurements of position and velocity. With this, students can grasp certain essential physical, geometric, and algebraic properties of motion and differentiation before undertaking the study of limits. (Author)

This is one of a series of Resource Letters on different topics, intended to guide college physicists to some of the literature and other teaching aids. This bibliography is designed to help physicists identify literature related to mathematical biology. (Author/RH)

An approximate method is developed for elastic scattering at large angle in the framework of classical mechanics. A simple formula for differential cross-section is obtained. (Author/BB)

Examines the concept of PdV work and the harmonic oscillator as an example of a thermodynamic system with properties analogous to an ideal gas. (SL)

Rewriting the usual relativistic equations in equivalent forms can help students recognize the relation between classical and relativistic mechanics. The derivation of relativistic equations is facilitated by means of simple algebraic generalizations of proofs often used in teaching their classical analogs to students who have not studied…

Addresses the problem of the optimum angle at which a putter should release the shot in order to achieve maximum distance. (BB)

Presents a simple model whereby the work per cycle done on an external agent, and a sand reservoir, by a reversible heat engine can be analyzed explicitly. (Author/SL)

Analyzes the sudden drop in the isothermal entropy of mixing when two ideal quantum gases are made identical. (Author/SL)