Explains the discrepancy between the principle-of-equivalence and the general theory of relativity in calculating the deflection of light by the sun. Shows that the total deflection is the sum of the deflection given by the principle-of-equivalence, and the deflection of infinitely fast particles. ( GA)

Intense radiation at microwave frequencies is emitted by certain nebular regions and stellar atmospheres. It is generated by maser action, which does for microwaves what laser action does for light. Describes in detail the types of masers and their action. (Author/MA)

International information flows are investigated for three energy related fields of physics using the referencing data appearing in physics journals. (Author)

Reviews the use of wind as an energy source. The status of wind power research is also discussed. (SL)

Provides a derivation of the evolution of an initially black-body spectrum in the closed Friedmann universe. (Author/SL)

Provides a physical description of motion resulting when force is applied perpendicular to the axis of rotation on a gyroscope. (SL)

Describes two elementary experiments involving plasma electrical conductivity. (SL)

Discusses the quantization of angular momentum components, Heisenberg-type inequalities for their spectral dispersions, and the quantization of the angular momentum modulus, without using operators or commutation relations. (MLH)

Discusses the Stark effect of the plane rotator using a simple analysis of symmetry features and a careful application of degenerate perturbation theory. (MLH)

Discusses the construction of wave packets by superimposing bound-state eigenfunctions. Illustrates the infinite square well and the infinite square well with a delta-function barrier. (MLH)

Discusses the uses of the Gelfand-Levitan formulation of the inverse problem as a source of exactly solvable bound-state models that are suitable for examples in quantum mechanics courses. (MLH)

Discusses textbook errors concerning the stopping potential and the work function of the collector in Millikan's experiments on the photoelectric effect. (MLH)

A simple geometric construction giving acceptable approximations to the locations of twelve points for placing frets on a guitar is described both geometrically and analytically. (DT)

Presents H. Richard Crane's acceptance speech for the 1976 Oersted Medal for physics education in which he discusses problems of teaching college level introductory physics. (SL)

Provides a course description for a one-semester introductory unit in the fundamentals of surface interactions and their relationships to absorption and catalysis. (CP)