Acquiring the Absorption Spectrum of various colored organic dyes is among the most widely conducted experiments in general chemistry labs. Using a UV/VIS spectrometer, such as the Spectronic 20, students measure the absorption of dyes at different wavelengths, then create graphical plots based on their data. The main learning objective is to help students connect observed color with the frequencies of light being absorbed. As such, a simple platform which simulates the function of a UV/VIS spectrometer is proposed to make it even easier to conduct this experiment.
This platform will be based on integrating a Raspberry Pi Computer, “Smart” Test Tube Rack, Food Coloring Dyes, and their standard absorption spectra. Initial cost analysis indicate that the cost of platform should be less than $100US in parts and should be easy to assemble.
*The original idea for this concept came from a student presentation at the Winter 2013 NYU-ITP about mixing water solutions to simulate various colors using RGB LEDs controlled by an Arduino.
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