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the purpose of this experiment is to use uv vis spectroscopy to probe the electronic structure of two different systems first weamp;#39;ll be using cyanine dyes and then we will be using zinc oxide quantum dots when you get to lab you should turn on the spectrophotometer let the deuterium and tungsten lamps warm up for at least eight to ten minutes before taking a sample to turn on the software you should select the online version of the instrument and wait for it to load when the dialog box prompting an operator name and password comes up select cancel and wait for the software to load to ensure that your lamps are on you can look at this little picture and if theyamp;#39;re both lit up then that means both lamps are on but in the event that they are not on you can go to instrument lamps and then check that both the deuterium and the tungsten lamps are on so when the instrumentamp;#39;s warmed up you can take the blank to account for the solvent and the cuvette youamp;#39;ll want