Discusses the theory of radiometric force and the historical development of the radiometer. (MLH)

Discusses some current research on hemoproteins, describes the process of metal replacement in hemoproteins, and reviews the preparation of cobaltmyoglobin. (MLH)

Discusses ten methods for measuring the thermal expansion of solids and the way in which the expansion coefficient relates to other properties of matter. (MLH)

Discusses three theories used to explain the interaction of electromagnetic radiation with matter: the multiphoton theory, the cascade theory, and the effective photon theory. (MLH)

Describes a quantum-mechanical theory using a density matrix for electrical conductivity in the presence of a magnetic field. (MLH)

Illustrates the mathematical relationships between the enthalpy, free energy, and entropy of a chemical reaction using the first and second laws of thermodynamics. (MLH)

Discusses textbook errors and alternative explanations concerning Planck's derivation of the distribution function for the energy density of black-body radiation. (MLH)

Discusses several alternatives to the use of laboratory animals in investigating biomedical problems. Alternatives include tissue culture, use of plant and bacterial material, redesigning experiments, and construction of mathematical and computer models. (CS)

Describes a lighted demonstration apparatus for representing the distribution of electrons, protons and neutrons in an atom. Also includes experiments with ice, forces, microscopes, spectra, and geological modeling. (CS)

Describes two recent incidents in which toxic synthetic chemicals in the environment have contaminated both livestock and fish. (MLH)

A review of the materials included in the Self-Paced Investigations for Elementary Science (SPIES) program, developed by Silver Burdett Company, is provided. In summary SPIES strongly reflects the strategies and format of Intermediate Science Curriculum Study (ISCS). (SL)

Describes the construction and application of two new types of detectors that use the discharge provoked in a gas by the passage of a charged particle as the means of detection. (MLH)

This report is designed as a guide for the production of science books for primary children. Section I contains presentations on the topic of how to produce primary science books, including: an essay on the development of physics theories, the roles of science books, editing science textbooks for primary schools, editing photographic science books…

Presents eight readers' letters and one editor's reply in which discussions are related to effects of zero-population growth on scientific creativity, employment crisis of industrial physicists, efficiency of ionic pumps, and the naming system of laws and effects in physics. (CC)