Based upon recent relativistic theory, the researcher describes the search for tachyons, particles having velocities greater than that of a light. The properties of these particles are speculated upon. The author delineates the difficulties anticipated in their detection and the assumptions underlying their methodology. (RR)

Describes the construction and operation of an overhead projection apparatus designed to demonstrate streamline flow of a liquid. The apparatus consists of a Plexiglass tank containing water in which plates forming the cell are submerged, a constant level reservoir, an overflow device and a system for marking the flow lines with a dye. (LC)

Discusses expanding user community seeking access to synchrotron radiation sources, properties/sources of synchrotron radiation, permanent-magnet technology and its impact on synchrotron radiation research, factors limiting power, the density of synchrotron radiation, and research results illustrating benefit of higher flux and brightness. Also…

An introduction to satellite meteorology is presented to promote use of live weather satellite photographs in the classroom. Topics addressed include weather satellites, how they work, earth emissions, satellite photography, satellite image analysis, obtaining satellite pictures, and future considerations. Includes sources for materials to…

Six physics teachers describe their experiences in selecting physics textbooks. Issues addressed include fitting text to students, involving more people in the selection process, need for periodic text changes, text change resulting from physics curriculum study, making text fill student needs, and problems faced when asking for a new text. (JN)

Describes how the Ontario Section of the American Association of Physics Teachers started a "Grade Eleven Prize Physics Contest" to generate interest in physics and recognize outstanding students. Also describes outcomes of contests, adaptation of the contest by Southeastern Pennsylvania Section, and suggestions for others wanting to…

Discusses why the Nobel Committee for Physics waited so long before giving Einstein the Nobel Prize and why they did not award it for relativity, but for the photoelectric effect instead. Focuses on the judgments of leading scientists who made nominations as well as committee members' decisions. (Author/JN)

Different ways in which the atmospheres of different planets have originated and evolved are discussed. Includes tables on the atmospheric composition of: (1) Earth; (2) Mars; (3) Venus; (4)Titan (Saturn's Satellite); and (5) the outer planets. (SK)

Presents results of Flesch readibility scores for introductory astronomy textbooks and noncalculus physics textbooks. Two tables list Flesch score, mean error, and grade level for 10 texts in astronomy and eight in physics. (CS)

Reviews six books dealing with geology, physics, and space. (AEA)

Melba Phillips, Professor Emeritus of Physics at the University of Chicago, reflects on her background, graduate career, scientific research, role in the American Association of Physics Teachers, political views, experiences in China, and other topics in this continuing series of interviews with outstanding physics educators. (SK)