Abstract
I'm always amazed by the beauty of the atomic spectra and can imagine the excitement of the early spectroscopists when they realized that the line spectra uniquely identify the elements. I would like physics students to share that excitement, but find that the tedious nature of reading a Vernier scale in a darkened room, reading fractional angles in minutes of degrees, and converting angles in degrees and minutes to decimal notation soon make the exercise so tedious that students lose sight of the intended task of identifying and characterizing the spectral lines. At Acadia University, we have adapted a PASCO rotary motion sensor1 and voltage probe, both interfaced to a computer using a Vernier LabPro,2 to semi-automate our spectrometer3 measurements.
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