Describes the design, construction, and performance of a low-cost, transversely excited molecular nitrogen laser. Suggests simple experiments and demonstrations using this laser. (MLH)

The consolidation of the theoretical concepts as well as the use and learning of experimental techniques that are compatible with the technological evolution has been the main goals in Thermodynamics and Heat Transfer and Thermal Systems Laboratories at Escola Politecnica of University of Sao Paulo. The infra-structure and experimental benches in…

This paper proposes an Internet facility that will authentically provide laboratory experiments remotely. Such a facility is brought to the doors of the distance learner to help provide learning that is comparable to that offered for conventional students. The paper describes the development of a prototype remote laboratory system, including…

Discusses the use of a set of experiments to provide undergraduate electrical engineering students with a knowledge of the state of the art in modern coherent optics from an engineering standpoint. (CC)

Discusses the technique of producing a grating with a spacing of 1 micron and 5 slits 50 microns long and 0.3 micron wide. Indicates that the slits are suitable for use in examination of electron diffraction patterns in the Gedanken experiment. (CC)

The comparative effectiveness of an aversive stimulus, withholding of resources, withdrawal of love, and reasoning, when used alone and when combined with praise, was assessed in a standard laboratory punishment paradigm with first and second grade children. (CS)

Discusses an experiment which illustrates the non-mixing properties of water at normal temperature with oil because of water's strong, open-ended hydrogen bonding interactions. Examples of the mixing properties between non-interacting substances and the near-complete mixing between water and solvents with limited H-bonding capacity are also given.…