Discusses the phenomenon of formation of white dwarfs, neutron stars, and black holes from dying stars for the purpose of providing college teachers with materials usable in the introductory physics course. (CC)

Presents a brief historical account of Michelson's invention of his interferometer with some subsequent ingenious applications of its capabilities for precise measurement discussed in details, including the experiment on detrmination of the diameters for heavenly bodies. (CC)

Presents a Resource Letter on air pollution, noise pollution, transportation, and solid waste for the purpose of acquainting college physicists with some of the literature and teaching aids. Included are five bibliographies of which four are annotated. (CC)

Discusses the physical properties, sources, physiological effects, and legislation pertaining to noise, especially noise characteristics in the community. Indicates that noise reduction steps can be taken more intelligently after determination of the true noise sources and paths. (CC)

Discusses physical phenomena which can be demonstrated by using a coffee cup, involving the short-range field, alpha-particle scattering, standing waves, and Bohr's closed electron orbits. Indicates that observation of the physics of the classroom in everyday objects can attract student interest in physics learning. (CC)

Summarizes the Darwin theory of x-ray diffraction in thin crystals or crystals with a mosaic texture and its modified application to crystals with three-dimensional electrostatic dipoles. Indicates that the dynamical theory is brought into its present relevance by the improvement of single crystal growth techniques. (CC)

Describes the construction and operation of an automatic insect dispenser suitable for feeding small vertebrates that are being maintained for behavioral experiments. The food morsels are squirted from their chambers an an air jet, and may be directed at a particluar portion of the cage or distributed to different areas. (JR)

Discusses the use of an ideal gas model to explain osmotic equilibrium and nonequilibrium flows through an ideal semipermeable membrane. Included are a justification of the relationship between an ideal gas and a dilute solution, a review of the irreversible thermodynamic flow, and some sample applications to physiology. (CC)

Discusses methods used in determination of absolute isotopic ages for the returned lunar material, including the uranium-lead, rubidium-strontium, and argon 40-argon 39 ratio methods. Indicates that there would exist a basin-forming bombardment period for the Moon extending over at least 300 million years. (CC)

Discusses the determination of hydrolyzable amino acid precursors and a group of six amino acids in the returned lunar samples of the Apollo programs. Indicates that molecular evolution is arrested at the precursor stage on the Moon because of lack of water. (CC)

Discusses some of the processes involved in resource recovery (recycling) from municipal solid wastes. Provides specific examples of recovery of valuable resources, and suggests that the environmental consequences and technology related to solid waste treatment should be included in high school science courses. (JR)