Shows how simple ideas about the forces between atoms and molecules can be used to explain, at an elementary level, some of the bulk properties of matter. (Author/CP)

Proposes the use of problems of the everyday world to motivate students to master basic physical principles. Cites the example of conversion of solar energy by a photovoltaic cell as a source of topics in electricity and solid state physics. (CP)

Advocates a strong emphasis on the teaching of the design of electronic circuits in undergraduate courses. An instructional paradigm involving the design and construction of a single-transistor amplifier is provided. (CP)

Applies the narrow-band model to the instruction of intrinsic and extrinsic semiconductors along with the phenomenon of compensation. Advocates the model for undergraduate instruction due to its intuitive appeal and mathematical simplicity. (CP)

Describes the adaption of a simple homogeneous analogue computer for the solution of the Schrodinger wave equations. Photographs of results are included. (CP)

Describes a cooperative research and construction project suitable for undergraduate physics students. Steps involved in the development of a device to demonstrate the distribution of molecular velocities in gases are detailed. (CP)

Describes the college level experiments: a simple measurement of the isotopic abundance of 40-K, a mechanical experiment, on kinetic energy, and on soap films between wedged plates. (GA)

Describes three experiments to demonstrate several aspects of artificial radioactivity. Metal foils were activated, using slow neutron bombardment. (GA)

Describes the electronic circuits used in computer technology for the processes of addition, subtraction, multiplication, and division. (MLH)

Discusses the role of phonon quasi-particles in a wide range of phenomena from simple thermal properties to super conductivity and other electric and magnetic phase transitions. (MLH)

Explains the necessity for a domain concept in understanding ferromagnetism and discusses various factors influencing the domain configuration in a crystal. (MLH)

Using the simple optical system and photodiode described in this article it is possible to give clear, quantitative demonstrations of all the Fraunhofer diffraction phenomena at single and multiple apertures. These measurements can be related to the theoretical predictions given in standard textbooks. Circuit diagram and optical layout are…

An elementary analysis of a common textbook airplane problem is given, and then, as an illustrative example, the possibilities of this mechanism for animal navigation are briefly considered. (Author/MA)

Presented is the design of an electrical analogue of the simple pendulum--a one-dimensional oscillator resonating within a frequency range which can be generated and observed with readily available instruments. One possible study sequence is outlined. (Author/MA)