Provides descriptions of seven computer programs (indicating program name, current cost, source, RAM needed, and compatible computers). Subject areas of the programs are algebra, astronomy, heredity, physics, medicine, and logic. (JN)

Describes a college-sponsored physics competition which benefits both high school physics teachers and students. The competition (a paper/pencil examination) is open to students of all abilities and provides an opportunity for teachers to meet and exchange ideas on a yearly basis. (JN)

Presents ideas for using model trains as a teaching tool and/or minicourse in junior high school science classes. Students investigate such topics as electric motor operation, electric potential, resistance, electromagnets, transformers, switches, centripetal force, cam mechanism, circuitry and wiring techniques, and ammeters. Directions for…

An elementary physical model of cone receptor cells is explained and applied to complexities of human color vision. One-, two-, and three-receptor systems are considered, with the later shown to be the best model for the human eye. Color blindness is also discussed. (DH)

Background information (theory), apparatus used and procedures required are provided for an experiment which involved the measurement of the deviations of carbon dioxide from perfect gas behavior by means of pressure/volume (pV) measurements at pressures of up to 20 atmospheres at room temperature. (JN)

An examination of methodological referencing patterns for actual physics, engineering, and sociology literature for the year 1983, using a Dunn planned comparison approach, indicates that physics differs from both engineering and sociology, while no difference was found between engineering and sociology. References are given in each sample…

Describes (1) a tri-color light-emitting diode (LED) and (2) modification of a demonstration using a dollar bill held between two soft drink bottles, one inverted upon another mouth-to-mouth. The modification consists of filling the bottles with water to increase their mass. (JN)

Describes a curriculum development project in which the Science Education Center of the University of Oklahoma and the science department of Norman (Oklahoma) High School prepared and classroom tested complete courses in biology, chemistry, and physics using the learning cycle principles of exploration, conceptual invention, and discovery. (JN)

Presents information on Halley's Comet including its discovery, impact on history, planned investigations related to its 1986 return, where and when to make observations, and predicted calendar of events. Gives general information on comets such as physical structure, theoretical origin, and paths and provides an annotated reference list. (JM)

Describes a simple and inexpensive interface to be used for data acquisition and control of some experiments in an undergraduate physics laboratory. Two specific applications are presented. Seven references are listed. (Author/MBR)

Describes a simplified method of calculating the speeds necessary to cause large relativistic changes and to determine the magnitudes of physical quantities as an object approaches the speed of light. Provides equations and two completed example problems. (JM)

Presents a sample study assignment given in a first year mechanics course that allows students to work in a simplified design mode. The assignment exposes them to an "open-ended" problem requiring a combination of creativity, analytical skills, and group interaction. (BC)

Discusses how the caustic by reflection is formed. Indicates that the phenomenon can be demonstrated by showing the reflection of the light from a distant point source from the inner curve of a polished hoop of metal (such as a wedding ring). (JN)

Describes three demonstrations used in the Chicago Museum of Science and Industry polarized light show. The procedures employed are suitable for the classroom by using smaller polarizers and an overhead projector. Topic areas include properties of cellophane tape, nondisappearing arrows, and rope through a picket fence. (JN)

Discusses the operation of two automatic toasters, comparing and contrasting an old Sunbeam model (approximately 20 years old) with a Proctor-Silex, a model currently being sold. Includes schematic representation of parts of the Sunbeam and schematic of essential parts and circuit diagram of the Proctor-Silex. (JN)