Describes some undergraduate laboratory experiments in acoustics which involve the analysis of speech and musical instrument sounds and the general analysis of the frequency range of complex sounds. (HM)

Describes an applied physics course which has been taught at Liverpool Polytechnic in the United Kingdom. Objectives, experimental work and assessment of the course are included. (HM)

Describes an experiment with Orange II to illustrate a central idea of thermodynamics--the amount of work that must be done to bring about a particular transformation depends not only on the energy content of the initial and final states but also on the degrees of dispersion of those states. (CS)

Describes a general chemistry experiment involving gas law calculations, utilizing Alka Seltzer as a source of carbon dioxide. (CS)

Reports procedures for a college experiment in radioisotope chemistry that involves ion-exchange of 51-Cr. (CS)

Describes an undergraduate laboratory experiment that demonstrates the value of shift reagent use in producing a first-order spectrum of trans-retinol. (CS)

Provides explanations for the variations in appearance of spectra taken at different pressures and cell lengths. (CS)

Describes several simple experiments that can be used to observe directly the dispersion curve of plasmon surface polaritons (PSP) on flat metal surfaces. A method is described of observing the increonental change in the wave vector of the PSP due to coatings that differ in thickness by a few nanometers. (Author/CS)

Presents experiments that illustrate some physiologically important aspects of ligand binding to hemoglobin. (CS)

Presented is an activity in which students use a microscope to do a forensic hair comparative study and a medullary classification. Mounting methods, medulla types, hair photographs, and activities are described. (DS)

Describes a technique for the supercooling of water, for use in the science classroom, involving adding common salt to a mixture of ice and water. Several investigations are included for use during (and after) the process of supercooling. (DS)

Seven easy-to-do experiments with plants are outlined to aid in teaching children about plants: their search for water, food, and light; a variety of rooting systems; and the effects of soil temperatures. (JMF)

A test is described in which three psychotropic drugs were evaluated for their effects on pregnant rats. Behavioral changes are given. (SA)

Describes an experiment that emphasizes the discrete nature of the different oxidation states of vanadium by the separation of ammonium metavanadate into all four species by ion exchange chromatography. (CS)

Outlined are simple activities for studying soil, which can be conducted in the schoolyard. Concepts include soil profiles, topsoil, soil sizes, making soil, erosion, slope, and water absorption. (SJL)