Citing several disadvantages in using traditional gold-leaf electroscopes in schools, a simple and easily constructed electroscope, suitable for both O- and A-level physics, is described. Information on adapting the electroscope to become a pulse electrometer is provided. Electroscope activities/demonstrations are also provided. (Author/JN)

Many postsecondary technical education programs are facing obsolescence and need more than another course or piece of equipment to be effective. Educational institutions must restructure their programs, redesign their laboratories, and retrain their faculty. The business and industrial community is the direct beneficiary of a strong vocational…

Describes a short computer program written in Logo programing language designed to provide students with new experiences in the study of vectors as they apply to classical physics. Suggestions for introductions, preparation, follow-up activities, and program examples are included. (EJS)

Newton's laws can be illustrated by having physics students participate in various activities while on roller skates. Several examples of such activities (including photographs) are provided. (JN)

Describes a team game in which a force table is used to solve vector problems, including rules and materials needed for the game. Ideas for other games in which physics topics can be used are also discussed, including a contest focusing on Project Physics Experiment 11, "Prediction of Trajectories." (JN)

The camera presents an excellent way to illustrate principles of geometrical optics. Basic camera optics of the single-lens reflex camera are discussed, including interchangeable lenses and accessories available to most owners. Several experiments are described and results compared with theoretical predictions or manufacturer specifications.…

Describes an apparatus used to demonstrate effects observed with polarized light. The apparatus employs two pendulums attached to threads crossing orthogonally over an overhead projector. Several demonstrations using the apparatus are provided. (Author/JN)

Describes construction of a model for observing a "green flash" (phenomenon witnessed under certain conditions just as the last bit of sun disappears below the horizon). Also describes an easily constructed, simple, three-dimensional vector arrow for instructional use. (JN)

Describes advantages of using longer focal-length concave and convex cylindrical mirrors constructed from sheets of flexible, back-surfaced, mirrored acrylic plastic. Suggestions for several student experiments, along with typical experimental results, are also presented. (Author/JN)

Although Newton's laws of motion are well known, studies have shown that many people have misconceptions about the motions of objects. Subjects of these studies tend to follow a theory held in the three centuries before Newton (impetus theory). This theory and studies examining misconceptions about motion are discussed. (JN)

Discusses sources which provide information on data relating to physical properties of materials. Includes a list of seven organizations (six in Great Britain and one in Germany) providing such data. Includes problems in searching for information, suggesting that computer searches may solve some of the problems. (JN)

Discusses four types of breaking waves (spilling, plunging, collapsing, and surging) and effect of these waves on beaches. Also discusses various patterns left by waves in sand (for example, ripples) and cusps (thin sheets of water forming horizontal curves as they wash up the slope of a beach). (Author/JN)

Traditionally, the terms "current,""voltage," and "resistance" are introduced in a linear sequence according to structure of the discipline and based on measurement operations. A new approach is discussed, the terms being introduced simultaneously in a qualitative way, using the system aspect of the electric circuit as an integrative base.…

Describes a proposal for a new physics program for geology majors at the University of Rome based on a problem-oriented approach and extending the range of physics concepts covered by more traditional courses. Emphasis is put on applying physical concepts to geological problems. (Author/SK)

Presents suggestions intended to help physicists who have not had the benefit of teacher training workshops and programs, including, among others, those on lecturing, conducting laboratories and discussion sessions, preparing tests, and dealing with difficult subject matter. (SK)