Electric Circuits as Seen by Thermal Imaging Cameras

Petr Kácovský (Charles University, Praha, Czech Republic); The Physics Teacher, 57, September, 2019, page 597.

This article discusses experiments using an IR camera to study electrical circuits. One example compares the heating of various resistors in a circuit. The data in the article were taken with a camera that costs over $2000, but the FLIR ONE® Pro LT thermal camera with the Vernier Thermal Analysis® Plus app could also do the job.

Design and Construction of a Low-Cost Arduino-Based pH Sensor for the Visually Impaired Using Universal pH Paper

Abubaker Qutieshat,* Rayhana Aouididi, and Rayan Arfaoui (Faculty of Dentistry, Jordan University of Science and Technology, Irbid 22110, Jordan);  J. Chem. Educ., 96, 2019, pp 2333–2338.

This article discusses visually impaired students and technology alternatives, including Vernier Logger Pro® with JAWS (Job Access with Speech) software and the Sci-Voice Talking LabQuest®. The article also discusses building an Arduino-based device to convert colored pH indicator paper to audio prompts.

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Exploring Chemical Equilibrium for Alcohol-Based Cobalt Complexation through Visualization of Color Change and UV–vis Spectroscopy

Jolie Ren, Tiffany Lin, Leonard W. Sprague, Iris Peng, and Li-Qiong Wang (Department of Chemistry, Brown University, Providence, Rhode Island); J. Chem. Educ., 97, 2020, pp 509–516.

The authors developed an experiment for students to study the pink and blue complexes of cobalt in alcohol as related to equilibrium, spectrophotometrically. They used Vernier SpectroVis® spectrophotometers and LabQuest interfaces to measure the full spectrum. Students also determined the concentration of each complex at respective wavelengths using the Beer-Lambert law.

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Hot Reactions: Applying Infrared Thermography in the Chemistry Education Laboratory

Travis C. Green, Rebekkah H. Gresh, Desiree A. Cochran, Kaitlyn A. Crobar, Peter M. Blass, Alexis D. Ostrowski, Dean J. Campbell, Charles Xie, and Andrew T. Torelli*; J. Chem. Educ., 2020, Article ASAP.

The authors use a FLIR ONE Pro smart camera plug-in and the Vernier Thermal Analysis Plus app to record and measure data from various physical and chemical changes. The article describes the basics of thermography and how to perform measurements and calculations to support concepts involving heat and heat changes in the chemistry curriculum.

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Revisiting the Determination of Percent Aspirin Lab: Using a Limiting Reactant Approach for Students to Also Determine the Amount of Iron (III) Chloride

Matthew Bodek, Mary Burch, Joshua Cannon, David Finneran, Kathleen Geveke, Heather Sinkinson, William Smith, and John Tierney; J. Chem. Educ., 97, 2020, pp 574–577.

In this twist of a classic spectrophotometric analysis done in aspirin synthesis, the authors describe a method to determine the concentration of iron in solutions by using the Beer’s law data from the synthesis of aspirin. High school students used this method to determine iron in stream waters. A Vernier Colorimeter was used in this experiment.

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Aluminum Metal Digestion as a Demonstration of an Oscillating Voltage Reaction: An Application Beyond the Textbook

Cathy L. Cobb, Wilson Haddock, and Monty L. Fetterolf (Department of Chemistry and Physics, University of South Carolina Aiken, Aiken, South Carolina); J. Chem. Educ., 97, 2020, pp 162–165.

A Vernier Voltage Probe and Logger Pro software are used to study the oscillations in voltage during a reaction of aluminum metal with nitric acid while catalyzed by copper ions.

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