Describes an inexpensive device for students to measure Planck's constant using the photoelectric effect. (SL)

Describes experiments simulating the mechanics of the human elbow and back. (SL)

Describes four experiments in mechanics which utilize a tennis ball serving machine. (SL)

Describes experiments and apparatus used to study the interaction of falling water drops on water surfaces and the collision between pairs of drops. (SL)

Describes the inception, use, and evaluation of a demonstration laboratory designed to enable first-year university students to observe physical phenomena that they did not observe in the secondary school. (Author/SL)

Describes an experiment for determining the blackbody radiation constant hc/k, utilize a conventionally built cavity and a single-beam, single-window Perkin-Elmer 12-C model spectrometer. (SL)

Biomimetic chemistry is concerned with the synthesis of small, molecular weight molecules which mimic the properties of metal-containing sites within certain biologically significant species. A series of experiments for an advanced undergraduate laboratory is described as a way to introduce this area into the chemistry curriculum. (JN)

Described are experiments to give students experience in the synthesis of peptides from amino acids and to use visible spectroscopy to measure a rate of reaction. The activities were designed for undergraduate courses. (RH)

Described is a laboratory activity to determine five unknown organic compounds. The procedures are designed to help students determine unknowns from a series of tests. (RH)

Described is an experiment that uses nuclear magnetic resonance to study the anomalous paramagnetism of iron(III) chelates. (RH)

Describes the kinetic mechanisms of reversible activators of enzymes that normally follow Michaelis-Menten kinetics. Examines reversible activators of the enzyme carboxypeptidase A (CPA). (TW)

Discusses a series of experiments performed by Thomas Hope in 1805 which show the temperature at which water has its maximum density. Early data cast into a modern form as well as guidelines and recent data collected from the author provide background for duplicating Hope's experiments in the classroom. (JN)

Illustrates the differences between explanations of projectile motion by a physics teacher and a baseball player. Equations are discussed and results are shown graphically. (DH)

Describes (1) interfacing the Commodore VIC-20 using joystick game ports; (2) a chromatographic integrator for the TRS-80; (3) upgrading input/output capabilities of the TRS-80 color microcomputer; (4) IBM PC interfaced to a Perkin-Elmer DSC-1 differential scanning calorimeter; and (5) an undergraduate experiment in which students design a…

Describes a qualitative analysis laboratory in which students examine specific precipitates that can be used to identify copper, cobalt, nickel, and iron cations. The objective of the laboratory is to determine which test or sequence of tests unambiguously identifies each cation and to use the results to identify several unknowns. (JN)