Describes equipment used for a magnetic force experiment that is capable of producing precise results but rugged enough to withstand handling by several hundred undergraduate students per year. (WRM)

Describes a procedure that allows undergraduate students to determine the approximate age of the universe using their own data. The experiment requires a relatively small telescope with a modest spectrograph. Includes sample data and calculations. (Contains 11 references.) (Author/WRM)

Describes two simple experiments on staring which have been tested with children as young as eight. Both procedures involve a looker and a subject where subjects say whether or not the looker is looking. The score in looking trials is usually above the 50% chance level. Includes score sheet. (PVD)

Discusses the use of small enclosures for experiments in a local lake. Describes the effects of lake inhabitants grazing on small zooplankton such as Daphnia, copepods, and rotifers. (ASK)

Presents a quick and easy demonstration of species-area relationships. Focuses on common cynipid rose galls which can be found over much of North America. (ASK)

Describes a laboratory experiment in which students explore how a microbe makes cellulose. (ASK)

Presents the temperature profile of the Duracell Test Strip obtained using a Inframetrics 740 thermal imaging radiometer and ThermaGRAM95 software and compares this to the theoretical profile derived by Clark and Bonicamp. (JRH)

Describes the use of microcomputers in physics experiments to extend powers of observation, increase the accuracy of measurements taken, and obtain large amounts of high quality information, especially continuous and rapidly changing/moving data. Discusses software for interfacing a microcomputer with mechanics experiments. (JRH)

Describes how the sound card of a personal computer can be used to collect data in physics experiments. Discusses gravity and simple waveforms. (Author/MM)

Illustrates some of the possible uses of the CCD camera in science teaching. Starts with the introduction of Flexcam which is a type of CCD camera used primarily by biology teachers and uses Flexcam to demonstrate observations and scientific skills in connection with the TV monitor. (Author/YDS)

Describes the study of dung-inhabiting or coprophilous fungi to illustrate basic lab techniques and fundamental ecological concepts. Contains 24 references. (WRM)

Explains an oxidation-reduction experiment using lemon cells made from zinc and copper strips of metal placed into a lemon. (YDS)

Presents an activity that demonstrates the effectiveness of flame retardants--substances added to combustible materials to slow down or hinder burning--that can be introduced when discussing combustion reactions or during a practical or everyday chemistry unit. (ASK)

Flame tests are used for demonstration of atomic structure. Describes a demonstration that uses spray bottles filled with methanol and a variety of salts to produce a brilliantly colored flame. (Contains 11 references.) (ASK)

Electrochemiluminescence involves the production of light near an electrode surface by generating species that can undergo highly energetic electron transfer reactions. Presents a demonstration that uses Ru(bpy)32+ (bpy = 2,2'-bipyridine) as the light-emitting molecule and tri-n-propylamine (C9H21N) as a coreactant. (Contains 25 references.) (ASK)