Describes an experiment simulating heat transfer and overall energy loss in upper layers of soil surfaces. (SL)

Describes an experiment wherein simple gamma-ray detection and analysis techniques were utilized to study radioactivity in local precipitation. (Author/SL)

Discusses the calibration of bolometric and photoelectric devices utilized for the measurement of solar energy. (SL)

Describes an experiment for estimating the half-life of thorium-232. (SL)

Discusses the practicality of the large scale production of electricity from solar sources utilizing current technology. The prospects are determined to economically unfeasible. (SL)

An approach to optimum building shape design is summarized that is based on local climate and is especially important for heat control in lower cost construction with temperature-responsive thermal characteristics. The study was supported by Istanbul Technical University. For journal availability see HE 508 931. (Author/LBH)

The Terraset Elementary School in Reston, Virginia, combines underground construction with a sophisticated heat reclamation mechanical system and solar collectors. (Author/MLF)

Describes a radiation counter comparable to commercial units which costs less than $100. It consists of six sections: Geiger-Mueller tube and holder; high voltage supply; low voltage supply; pulse shaping circuit; "start/stop counts" gating circuit; and counter/display. List of materials needed and schematic diagrams are included. (JN)

Outlines the issues raised by health professionals concerned about the threat of nuclear weapons and nuclear war, including epidemics, civil defense, arms costs, psychosocial aspects, and ethical responsibility. Appendixes include lists of antinuclear organizations, medical professional associations, and 160 references. (SK)

Bioconversion to fuels, ocean thermal-gradient power conversion, and energy systems are discussed in this last article of a three-part series on solar energy. It is noted that solar research has near-term and long-term implications for the housing industry, manufacturers of components designed for homes, and the public in general, and that…

The soon-to-be-completed North Campus of the Community College of Denver demonstrates a conviction on the part of the state and the design team that the use of solar energy is economically and technologically and alternative to the continued consumption of fossil fuel. (Author/MLF)

A description of the moon's total eclipse indicating the path, traveling speed and duration, followed by a concise description of how a total eclipse happens and what scientists actually study with relations to an eclipse. (EB)