Describes a simulation method for measurement of errors that requires calculators and tables of random digits. Each student simulates the random behaviour of the component variables in the function and by combining the results of all students, the outline of the sampling distribution of the function can be obtained. (GA)

Describes how to construct a simple on-axis hologram designed to illustrate the reconstruction of images in terms of Fresnel zone plates and gratings. (GA)

Describes a method of measuring small temperature differences that amount to a .01K, using an arrangement of a copper-constantan thermocouple, a microamplifier and a galvanometer, as an indirect way of measuring heat energy. (GA)

Explains how to construct a three dimensional model for stereographic projection. It will be suitable for presenting the symmetry of crystal systems, and will help physics students understand the nature of crystallography. (GA)

Describes the construction of a direct-reading inertial balance that works on the same principle as that used by astronauts in space when weightless. It is used to help demonstrate and measure inertial mass. (GA)

Describes an open-ended laboratory project suited to science materials. The students are asked to determine the structure, the properties and possible applications of a commercial material that is being developed and supplied by the manufacturer. (GA)

Describes how to implement numerical integration on a pocket calculator to solve two kinds of differential equations important in physics. The two equations are those defining simple harmonic and quantum harmonic motion. The half-increment method is used for this purpose. (GA)

Describes the life history and the personal qualities of Max Born. The contributions of Born to the advancement of physics are discussed. Some of his correspondence with Einstein is included. (GA)

Explains a university report proposing changes in the existing sixth-form curriculum to a common core, for all sixth-form syllabuses in physics, that will include: mechanics, waves, electricity and magnetism, and matter. Comments on the implications of the proposal are also stated. (GA)

Explains the properties and gives the derivations of Airy's functions for simple example problems on stress such as the cantilever beam and the tensional cross-bow. (GA)

A basic scheme for scientific theorizing is presented. Subtopics include: (1) the plausibility of model; (2) mathematical formulation; and (3) dangers of models. (MDR)

The use of chemical properties of metals and water via outer electron behavior models for instruction in science is presented. (MDR)

Discussed are aspects of the use of mathematical models in the teaching of oscillation theory. (MDR)

Discussed are how models arise, are used, and abandoned in favor of some different theory. Maxwell's work in electromagnetic theory is used as an example. (MDR)

A demonstration to illustrate sum and difference frequencies of a nonlinear device is explained. (MDR)