Describes how many of the geometrical and physical properties of the binary elastic collision of two particles can be represented by an isoceles trapezoid in the velocity space. (BB)

The basic physical principles of dye lasers are discussed and used to analyze the design and operation of tunable dye lasers pumped by pulsed nitrogen lasers. Details of the design and construction of these dye lasers are presented. Some simple demonstration experiments are described. (BB)

Reports some reactions and opinions of the students to a course in nuclear and radiation chemistry using programmed instructional aids. Concludes that the findings were very favorable to the course. (GA)

Reports that five hours per week remedial work with freshmen failing the introductory chemistry course led to higher final marks than for a group not receiving remedial help. (CP)

Indicates some of the information that may be obtained from a binary solid-liquid phase equilibria experiment and a method to write a computer program that will plot an ideal phase diagram to which the experimental results may be compared. (Author/CP)

Describes the laboratory procedure suitable for an introductory organic chemistry procedure. (CP)

Discusses an experiment involving a linear chain of falling dominoes. The time for a chain of N equally spaced dominoes to fall is measured and a plot is made between the time and N. The experimental data are compared with the predictions of theory. (Author/GA)

Describes an experiment to verify the Compton collision formula and the angular dependance of the Klein-Nishina formula. Equipment used is a 1-mCi(137)Cs source, 2x2 in. NaI detector and a multichannel analyzer. Suitable for honor undergraduates. (Author/GA)

Describes a thought experiment using a general analysis approach with Lorentz transformations to show that the apparent self-contradictions of special relativity concerning the length-paradox are really non-existant. (GA)

Demonstrates that infinitely many Lagrangians and Hamiltonians can be constructed from a given equation of motion. Points out the lack of an established criterion for making a proper selection. (Author/GA)

Proposes ways in which developing nations can adapt engineering education to their specific national needs. (Author/SL)

Presents an experiment for a physical chemistry course designed expecially for students majoring in the life sciences. (SL)

Reviews legislation and controls in effect, and needed, to reduce the hazards of violent reactions in the uncontrolled mixing of incompatible chemicals. (SL)

Discusses the need for involvement of non-academic experts experienced in engineering in university directed task-oriented research. (SL)

Describes a method of utilizing case studies in engineering education which has a three or four student team prepare jointly an in-depth analysis to be presented orally to the class. (SL)