Describes: (1) experiments using a simple phonocardiograph; (2) radioactivity experiments involving a VELA used as a ratemeter; (3) a 25cm continuously operating Foucault pendulum; and (4) camera control of experiments. Descriptions of equipment needed are provided when applicable. (JN)

This investigation showed no sex difference between boys and girls with regard to practical work at the end of their first year of secondary school and no difference between schools and groupings (all boys, all girls, mixed schools with mixed science classes, and mixed schools with single sex science classes). (JN)

Today students routinely measure the acceleration due to gravity (g) with strobes and high-speed photography. However, it is possible to measure g using equipment and reasoning available to Galileo. Such an experiment (and the equipment needed) is described. (JN)

Presented is a bibliography of articles published in the "Journal of Chemical Education" (1968-1983) which focused on industrial chemistry. Items are listed under these headings: real world of industrial chemistry; industrial notes; subject matter articles; industrial chemistry experiments/demonstrations; academic-industrial interface;…

Background information (theory), apparatus used and procedures required are provided for an experiment which involved the measurement of the deviations of carbon dioxide from perfect gas behavior by means of pressure/volume (pV) measurements at pressures of up to 20 atmospheres at room temperature. (JN)

Describes an experiment involving the preparation of copper iodide that gives stoichiometric results. Materials needed and procedures are discussed along with ideas on different ways to analyze the data. Pertinent chemical equations are presented. (BC)

Discusses the acoustics of bells by examining what determines the quality of a bell, the frequency it emits, and the note perceived by the listener. The analysis concentrates on a ship's bell but also considers several handbells. Laboratory bench set up for studying bells and nodal lines of bells are illustrated. (BC)

Presents a series of syntheses in which poly-4-vinylpyridine is substituted for pyridine or other tertiary amines, avoiding some of the safety problems associated with traditional reagents and providing a readily recoverable and recyclable reactant. Background information, procedures used, and results are included. (JN)

Background information, procedures used, and typical results obtained are provided for an experiment in which gas chromatography is used to prove the application of quantum symmetry restrictions in homonuclear diatomic molecules. Comparisons between experimental results and theoretical computed values show good agreement, within one to two…

Students complete five experimental projects at the end of a senior-level biochemistry course which involves the isolation and characterization of myosin and its water-soluble subfragments. Procedures used and results obtained are provided for such projects as viscosity and ATPase measurements and gel electrophoresis experiments. (JN)

Describes (1) a tri-color light-emitting diode (LED) and (2) modification of a demonstration using a dollar bill held between two soft drink bottles, one inverted upon another mouth-to-mouth. The modification consists of filling the bottles with water to increase their mass. (JN)

Describes a scheme in which students are arbitrarily paired and presented with a menu of 11 experiments (as well as a figure illustrating their relationships). Each student performs seven experiments in triplicate during the 11 3-hour laboratory periods. Goals of this course are included. (JN)

Describes a simple and inexpensive interface to be used for data acquisition and control of some experiments in an undergraduate physics laboratory. Two specific applications are presented. Seven references are listed. (Author/MBR)

Describes an experiment which illustrates simple synthetic techniques, redox principles in synthesis reactions, interpretation of visible spectra using Orgel diagrams, and the spectrochemical series. The experiment is suitable for the advanced undergraduate inorganic chemistry laboratory. (JN)

Describes test-tube organic chemistry procedures (using comparatively safe reagents) for the beginning student. These procedures are used to: examine differences between saturated and unsaturated hydrocarbons; compare structural isomers; and compare organic and inorganic acids and bases. (DH)