This tutorial will give you a sense of how various light sources differ. It is not intended to be a comprehensive explanation of what causes the differences, but it will help you to visualize what your chemistry instructors mean when they talk about continuous, discrete, and other types of spectra.
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These Supplemental Materials accompany the article "Simultaneous Display of Spectral Images and Graphs Using a Web Camera and Fiber-Optic Spectrophotometer" Niece, Brian K. J. Chem. Educ., 2006, 83, 761-764 and are provided with the permission of the Journal.