Describes a general chemistry experiment which uses infrared spectroscopy to analyze inorganic ions and thereby serves to introduce an important instrumental method of analysis. Presents a table of eight anions and the ammonium ion with the frequencies of their normal modes, as well as the spectra of three sulfate salts. (RR)

Describes modifications of a commercially available strip-type transmission line, which makes possible reproducible measurements of standing waves on the line. Experimental data yield values for the characteristic impedance, phase velocity and line wavelength of radiation in the transmission line, and the dielectric constant of material in the…

Peritoneal dialysis in anephric is employed as an effective aid in instruction of second year medical students in basic principles encompassed by the field of renal physiology. (IR)

Reports the instructor's experiences with open-end introductory physics laboratories. Students' reactions to the course are summarized. Organizational details and changes in the organization made for 1969-70 are also included. Bibliography. (LC)

Describes how the Joule-Thomson porous plug experiment may be used to illustrate the usefulness of the enthalpy function, irreversibility, steady-state ideas, and a relativity principle inherent in Newtonian mechanics. Bibliography. (LC)

Reviews the work of Weber and his colleagues in their attempts at detecting extraterrestial gravitational waves. Coincidence events recorded by special detectors provide the evidence for the existence of gravitational waves. Bibliography. (LC)