Describes a novel and simple method of measuring the refractive index of transparent plates using a Michelson interferometer. Since it is necessary to use a computer program when determining the refractive index, undergraduates could be given the opportunity of writing their own programs. (Author/JN)

A hydrodynamic modulation voltammetry (HMV) experiment involving use of simple hydrodynamic modulation procedures is described. Competing with time/equipment restrictions of most teaching laboratories (stopped-stirring and stopped-flow volumetry), students perform both batch and flow analyses and are introduced to analytical flow systems and the…

Use of phase transfer agents to facilitate/accelerate chemical reactions has become an established practice, particularly in organic chemistry. Describes an undergraduate laboratory procedure demonstrating the principles involved in the use of said agents. Includes student results from phase transfer assisted permanganate oxidations. (Author/JN)

Describes experiments using dye solutions in liquid crystals in which polar molecules are oriented in an electrical field and devices are constructed to change their color in response to an electric signal. (CS)

Presents background information, materials, calculations, and laboratory procedures for a physical chemistry experiment focused on the thermodynamics of a galvanic cell. (JN)

A photovoltaic cell experiment utilizing the convenience of a solar simulating type lamp is described. Insight into the solid state aspect of a solar cell is gained by the student in studying the characteristics, and deducing from them cell parameters and efficiency. (Author/CS)

Describes a research project which demonstrates to college-level psychology students the differences between experimental and correlational research methods. The project consisted of an examination of the relationships between rewards and helping and costs and helping in a nonemergency situation. (Author/KC)

Presents background information, safety notes, and laboratory procedures for synthesizing dinitrogen and dihydrogen complexes of molybdenum. The one-step method described is suitable for advanced inorganic chemistry classes. (SK)

Describes the collection and culturing of microscopic molds that feed mainly on tiny nematodes in the soil. Includes bibliography. (MA)

Experimentally examined how therapist sex role behaviors and subject sex roles influence perceptions of cotherapists conducting marital therapy. Analyzed the relationship between perceived therapist competence and verbal dominance, the effectiveness of traditional and nontraditional sex role styles, and sex-type related to preference for female…

In two experiments, subjects made attributions after reading a description of a rape. Responsibility was more strongly attributed to the victim's character for unrespectable victims, and to chance for respectable victims. Males blamed the victim's character more than females; females emphasized the role of chance more than males. (Author/GC)

Presents seven notes on new equipment, techniques, or materials of interest to teachers of physics. A circuit of a low-cost computer terminal to audiovisual device interface, and a demonstration of the buoyancy of air are among notes presented. (HM)

Presents a physical chemistry experiment demonstrating the differences between thermodynamics and kinetics. The experiment used the formation of phenol and acetone from cumene hydroperoxide, also providing an example of an industrially significant process. (CS)

Describes the procedures for construction of a nitrate coated-wire ion selective electrode and suggests experiments for evaluation of electrode response and illustration of typical analytical applications of ion selective electrodes. (CS)

Presents an undergraduate experiment demonstrating sampling error. Selected as the sampling system is a mixture of potassium hydrogen phthalate and sucrose; using a self-zeroing, automatically refillable buret to minimize titration time of multiple samples and employing a dilute back-titrant to obtain high end-point precision. (CS)