Describes an experiment on light trapping in thin liquid films. Injection of a thin layer of solution at the boundary of a moving solvent is utilized to create a thin fluid sheet having an index of refraction greater than that of the surrounding medium. (Author/SA)

Describes a short undergraduate experiment which helps in explaining the concept of entropy and in illustrating the second law of thermodynamics. (GA)

Three derivations of the complete discharge time of a capacitor through a resistor are reviewed and examples of potential interest in the classroom are given. (Author/SA)

Describes a course offered at the University of Toronto. The course deals with the new world view of the nature of reality and the parallels of the concepts with modern physics and Eastern mysticism. (Author/SA)

Discusses the current shortage of qualified physics teachers and possible reasons for this shortage. (BT)

Using hypothetical lawsuits as examples, the more common rules of law which define the acceptable conduct of a physics teacher in the classroom, laboratory, and general school area are examined. (BT)

Describes a type of individual laboratory-activity examination developed for use in an undergraduate general physics class whose enrollment was more than 100 persons. Test preparation, procedure, evaluation, and outcomes are discussed. (BT)

Discusses whether electronics should be included as a subject at school, and describes the process of developing an O-level electronics course which is based on electronic systems for British schools. The course content and structure are also included. (HM)

Traces the history of the search for the ultimate nature of matter. The work of outstanding physicists since the late nineteenth century is discussed as it relates to the total picture of the search for a single unifying theory. (SA)

This resource letter is an annotated bibliography aimed at individuals who have recently become interested in lecture demonstrations in physics. Listed are 103 printed sources of information on lecture demonstrations. Whenever possible, annotations are followed by reviews so that other opinions can be consulted. (BT)

Describes how to measure Brewster's angle using Polaroid sunglasses and the reflection of the ceiling light on a polished floor. (GA)

Discusses electric field strength, magnetic field intensity, and magnetic induction showing the differences between the physical quantities involved and their units. (GA)

Discusses Barkla's part in the controversy around the J-phenomenon, and the different factors that contributed to the refutation of the phenomenon. (GA)

Describes an individualized Physical Science Study Committee (PSSC) physics program which follows the Personalized System of Instruction (PSI) format. The program has a variable-credit option, to provide flexibility to meet students' needs and interest. (GA)

Presents short articles on: display of line spectra, calorimeters, filling balloons from gas jets, and digital mini-module systems. (MLH)