Presents two simple methods of calculating the respective terrestrial westward and eastward displacements of a vertically projected and a perpendicularly dropped body which give due emphasis to physical principles, including Kepler's law, conservation of angular momentum, and nonrotating coordinate system with origin at the earth's center. (CC)

The First Law of Thermodynamics is discussed based on childhood experiences such as playing with seesaws, falling balls, thrown balls, bouncing balls, friction, combustion, and arithmetic. (DF)

Elementary treatment of emission of radiation considering that in many cases the results for a particular quantum state are essentially an average of the appropriate classical variable over the particle density function. Emphasis is on the equipment capable of demonstrating the necessary conditions rather than the quantum theory. (DF)

Discusses the circumstances and the immediate impact of the events and discoveries in the field of nuclear physics in 1932. Many of the events are described in samples of correspondence between the researchers in the field. (TS)

A discussion of the strangeness quantum number is used to introduce the problem of discovering a universal law of weak interactions. Progress made in this area and some suggestions as to future developments are briefly described. (TS)

The properties of the weak force between the subatomic particles is described. The weak force is observed in the form of nuclear beta radioactivity. Applications are given to terrestrial and extraterrestrial phenomena. (TS)

Presents the history, current concerns and potential developments of nuclear fusion as a major energy source. Controlled fusion research is summarized, technological feasibility is discussed and environmental factors are examined. Relationships of alternative energy sources as well as energy utilization are considered. (JM)

Describes the development of radiation as a tool of medicine. Includes topics on history of radiation, electromagnetic spectrum, X-ray tubes, high energy machines, radioactive sources, artificial radioactivity, radioactive scanning, units, present radiation background, and effect of radiation on living tissue. (DS)

Atomic spectroscopy is the study of atoms/ions through their interaction with electromagnetic radiation, in particular, interactions in which radiation is absorbed or emitted with an internal rearrangement of the atom's electrons. Discusses nature of this field, its status and future, and how it is applied to other areas of physics. (JN)

Presents programmable calculator solutions to selected problems, including area moments of inertia and principal values, the 2-D principal stress problem, C.G. and pitch inertia computations, 3-D eigenvalue problems, 3 DOF vibrations, and a complex flutter determinant. (SK)

Sections of this article deal with (1) the first quarter of a beginning mechanics course, (2) development of computer based learning materials in other parts of physics, (3) production strategies, and (4) the future of computer based learning in physics and other areas. (Author/CMV)