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Extensible Interface for a Compact Spectrophotometer for Teaching Molecular Absorption in the Undergraduate Laboratory
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Navarre, Edward C. – Journal of Chemical Education, 2020
A simple computer interface for controlling a compact spectrograph for use as a spectrophotometer in an undergraduate teaching laboratory was developed. The project was implemented on a Raspberry Pi computer which permits the integration of a light source into the software. The interface was written in Python to facilitate modification by the user…
Descriptors: Chemistry, Science Instruction, College Science, Undergraduate Students
An Open-Source, Cross-Platform Resource for Nonlinear Least-Squares Curve Fitting
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Möglich, Andreas – Journal of Chemical Education, 2018
The quantitative evaluation of experimental data and their graphical presentation are integral to teaching and research in chemistry and the life sciences. Data are commonly fitted to physical models, which in all but the simplest cases are expressed as nonlinear mathematical functions. To facilitate data evaluation in both teaching and research…
Descriptors: Least Squares Statistics, Data, Chemistry, Science Instruction
Simple and Inexpensive Computer Interface to a Durrum Stopped-Flow Apparatus Tested Using the Iron (III)--Thiocyanate Reaction
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Hoag, Craig M. – Journal of Chemical Education, 2005
A simple Vernier software and Technology LabPro unit was used to interface a computer with a Durrum model 110 stopped-flow apparatus using the iron (III)--thiocyanate reaction. The software can readily be used to retrieve that data from the stopped-flow apparatus using one probe to measure the voltage and a second probe to trigger the data…
Descriptors: Computer Interfaces, Computer Software, Data Collection, Chemistry