Describes how the Joule-Thomson porous plug experiment may be used to illustrate the usefulness of the enthalpy function, irreversibility, steady-state ideas, and a relativity principle inherent in Newtonian mechanics. Bibliography. (LC)

Energy measures, flexibility, durable materials and an imaginative site plan, help create a stimulating place to learn at the Norman Rockwell Elementary School in Omaha (Nebraska). (Author/MLF)

Energy use is lowered in a new dormitory at Montclair State College (New Jersey). A five-story covered atrium reduces the exterior wall area, and inverted venetian blinds hung between the double glazed south windows reflect solar energy up to the concrete ceiling where it is stored until night. (Author/MLF)

Designed on a low budget and for low operating costs, an inner-city preschool building in Middletown (Connecticut) has south-facing windows that admit maximum solar heat in the winter. (MLF)

Presents background information concerning microwave properties useful to persons considering the suitability of various materials to microwave processing. (CS)

Existing elementary schools in Washington, Pennsylvania, were replaced by an educational park with two two-story buildings. A heat recovery system and an additional thickness of insulation conserve energy. (MLF)

Describes an exercise designed to be used in an Advanced Placement (AP) chemistry course to accompany the study of thermodynamics. Uses Differential Scanning Calorimetry in teaching the concepts of thermochemistry and thermodynamics. (JRH)

Examines the process of student conceptual change regarding thermal expansion using the Dual Situated Learning Model (DSLM) as an instructional approach. Indicates that DSLM promotes conceptual change and holds great potential to facilitate the process through classroom instruction at all levels. (Contains 38 references.) (Author/NB)

Describes the working of the Adiabatic Gas Law Apparatus, a useful tool for measuring the pressure, temperature, and volume of a variety of gases undergoing compressions and expansions. Describes the adaptation of this apparatus to perform isothermal measurements and discusses the theory behind the adiabatic and isothermal processes. (JRH)

Describes how Newton's Law of Cooling and the Method of Mixtures are used to solve the basic dilemma of whether to add the cool cream to the hot coffee or to let the black coffee cool down first and then add the cream. (ZWH)