We propose an apparatus for teaching experimental thermodynamics in undergraduate introductory courses, using thermoelectric modules and a real-time data acquisition system. The device may be made at low cost, still providing an easy approach to the investigation of liquid-solid and liquid-vapour phase transitions and of metastable states…

Developments in the laboratory-based teaching of physics and astronomy are resulting from the collaboration between conventional and distance teaching universities. The collaboration, piCETL, is one of the Centres for Excellence in Teaching and Learning established as a result of a broad initiative by the Higher Education Funding Council for…

The law of conservation of momentum is one that students often have difficulties understanding. This experiment allows students to use childhood toys to examine and calculate the muzzle velocity of their favourite water gun by using an air track, a spark timer or data logger and the law of conservation of momentum in a one-dimensional case, a…

A laboratory project for a first semester biochemistry course is described, which integrates the traditional classroom study of the structure and function of biomolecules with the laboratory study of these molecules using fluorescence spectroscopy. Students are assigned a specific question addressing the stability/function of lipids, proteins, or…

PLANNERS OF CURRENT UNIVERSITY LABORATORIES OFTEN MAKE THE SAME MISTAKES MADE BY INDUSTRIAL LABORATORIES 20 YEARS AGO. THIS CAN BE REMEDIED BY INCREASED COMMUNICATION BETWEEN SCIENTISTS AND DESIGNERS IN SEMINARS DEFINING THE BASIC NEEDS OF A PARTICULAR LABORATORY SITUATION. ELECTRONIC AND MECHANICAL EQUIPMENT ACCOUNT FOR OVER 50 PER CENT OF TOTAL…

THE COMPLEMENTARY FUNCTIONS OF TEACHER AND LANGUAGE LABORATORY ARE OUTLINED, AND THE TEACHER'S ROLE AS MONITOR (LISTENING IN ON STUDENTS' WORK) IS DEFINED. INTERFERING, SPOTCHECKING, AND HAPHAZARD MONITORING ARE CAUTIONED AGAINST. IDEAL LAB GROUP SIZE SHOULD BE BETWEEN SIX AND 10 STUDENTS, TO ENABLE THE TEACHER TO KNOW DURING THE SESSION HOW HIS…

This technical manual for the use of language laboratories includes information on the following topics: (1) types of laboratories, (2) the tape, (3) the tape recorder, (4) other basic technical equipment, (5) the audio-active laboratory, the audio-active-compare laboratory, and an evaluation of the two, (6) possibilities for expanded use, (7)…

Describes an inexpensive apparatus used to study the kinetics of fast reactions. Suggests an appropriate reaction for study, and laboratory techniques. (MLH)

Describes a device for maintaining the proper water level in knife boats during ultramicrotomy. Water levels in troughs are adjusted rapidly and precisely during the cutting process. Illustrations are included. (Author/MA)

An alternative method of bacterial spore staining using malachite green is described. This technique is designed to save time and expense by a less messy procedure. Advantages and adaptations of the technique are also given. (MR)

Describes a zinc-sawdust mixture effective for cleaning up mercury spills and presents an experiment to illustrate the mixture's effectiveness. (SL)

Describes a modification to the Jensen and Edwards model current balance utilized in elementary physics laboratories which improves operation and ease of maintenance. (SL)

Considers the deviation from the ideal flows of both a backmix tank and a backmix tank followed by a flow vessel. Background information, apparatus used, and experimental procedures are provided. Typical results are also provided and discussed. (JN)

Discusses planning for non-structural laboratory items, such as desks, instruments, and high purity water systems. (MLH)

Describes the use of the magnetometer in an introductory undergraduate geology course. (SL)