Described are the major environmental effects resulting from the production of electricity by nuclear power plants. Discussed are effects of waste heat, radioactivity, radioactive waste elimination, costs, and future prospects. Included are diagrams illustrating cooling tower operation, effects of thermal discharge into water systems, radioactive…

Articles describing construction of an inexpensive spectrograph, improving focusing of Polaroid cameras, use of space satellites for instruction, and construction of an optics demonstration platform. (RH)

Provides a chronicle of the work of Miss Leavitt in the field of variable stars during the early part of the 20th century. (CP)

These experiments suggested that human subjects perceived velocity and acceleration directly and accurately. As well, they suggested that extrapolation of velocity is performed accurately through a direct extension of the movement that was seen. (Author/RK)

Presents data from the external examination entries of the G.C.E. and C.S.E. to challenge statements that there is a swing away from science in the schools and that combined and integrated science are making great inroads into the teaching of chemistry and physics. (GS)

Discusses reasons why physics is considered contrived and abstract, and suggests ways to teach aspects of physics that show relations between human beings and between man and nature. (MLH)

Gives a short biography of James E. Keeler, and describes some of his outstanding discoveries, and his pioneering work in observational research where he applied physical methods to the analysis of planets, stars and nebulae. (GA)

Examples of the presentation and solution of variations on a common projectile trajectory problem are presented. (BB)

The extended Galilean transformation carries an inertial frame into a rigid frame with uniform spatial, but arbitrary translational acceleration. Besides being useful in discussing the equivalence principle, this transformation provides a physical interpretation for the theorem in nonrelativistic quantum mechanics, that we cannot coherently…

Describes some alternate theories to the big bang theory, such as Ellis' static universe with its two centers, and Dirac's large number hypothesis and his unified field theory. (GA)

Reviews the use of computers in various aspects of physics teaching. Introduces some basic hardware and software concepts and jargon. Illustrates these ideas using four vastly different microcomputers, with prices, to help in choosing the right educational computer system. (GA)

Simple activities are described which use paper clips and straws or a board to demonstrate the properties of the lever. (BB)

Traces the development of stabilized lasers from the Massachusetts Institute of Technology passive-stabilization experiments of the early 1960s up through the current epoch of highly stabilized helium-neon and carbon dioxide and continuous wave dye lasers. (Author/HM)