Describes two experiments in which a pendulum was used to determine acceleration along the runway during the takeoff of a plane and the takeoff speed. Uses a water-filled nanometer to determines the drop in cabin pressure during the flight. (CCM)

Explores different solubility processes and related issues, including the second law of thermodynamics and ideal mixtures, real liquids, intermolecular forces, and solids in liquids or gases in liquids. (Contains 22 references.) (ASK)

Discusses the quality of textbooks, worksheets, and laboratory manuals and presents Project 2061's review of science and mathematics textbooks in the United States. (YDS)

Explains the qualities of a good laboratory experiment. (YDS)

Roger T. Kelleher, rightly known as one of the foremost contributors to behavioral pharmacology, also made many important contributions to the experimental analysis of behavior. He participated significantly in the development of the discipline, through both his research and his editorial contributions to this journal. This article summarizes his…

Molar and molecular views of behavior imply different approaches to data analysis. The molecular view privileges moment-to-moment analyses, whereas the molar view supports analysis of more and less extended activities. In concurrent performance, the molar view supports study of both extended patterns of choice and more local patterns of visiting…

In three experiments using the barpress conditioned suppression task with albino rats, we studied the renewal (relapse) of conditioned fear in an ABA fear-renewal paradigm. We found that explicitly unpaired (EU) deliveries of conditioned stimuli (CSs) and unconditioned stimuli (USs) in Context B thwarted fear renewal in Context A. Evidence…

As observed by Gombrich [Gombrich, E. H. (1960). "Art and illusion." Oxford: Phaidon Press], we confirm that most people are unaware of the size of their own image on mirrors. Specifically we have documented the knowledge that people have of the size of their own head and of the size of the mirror image of their own head. In addition we have…

Klin et al., 2004 and Levine et al., 2000 concluded that readers fail to resolve noun phrase anaphors when the antecedent is difficult to retrieve from memory and the inference is not necessary for comprehension. In four experiments we investigated the hypothesis that these inferences were actually partially encoded. Although the results of a…

As heat sources go, the old standby for elementary and middle school science laboratories has been the centuries old alcohol lamp. Unfortunately, this inexpensive heat producer has been a continuous source of accidents--many of which are relatively serious. Hot plates are emerging as the most popular source of heat for science experiments. The…

Four experiments were conducted to assess the roles of politeness and humor in the asymmetry of affect observed in verbal irony production. In Experiments 1 and 2, participants rated different replies (ironic, literal, or "no response") made to hypothetical scenarios for their politeness and humor, respectively. Participants in Experiment 3 were…

The feasibility of using an optical mouse to track the viscoelastic deformation of low-density polyethylene films that have a fixed attached load is presented. It is seen that using an optical mouse and with rudimentary experiment paraphernalia and arrangement, it is possible to get good measurements of viscoelastic deformation.

The Diels-Alder reaction is used as an example for showing the integration of computational and preparative techniques, which help in demonstrating the physical organic concepts in synthetic organic chemistry. These experiments show that the students should not accept the computational results without questioning them and in many Diels-Alder…

Three alternative methods for performing flame tests using cheaply and easily available cotton swabs are described. These flame tests are useful for chemical demonstrations or laboratory experiments because they are quick and easy to perform with easy cleanup and disposal methods.

Experiments are conducted for spectroscopic analysis of the allyl esters of some aromatic carboxylic acids. It is understood that these experiments allow the students to monitor the effect of hydrogen bonding on the IR stretching frequencies for the hydroxyl and carbonyl groups and also provide them with an excellent opportunity to examine the…