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Summary
DescriptionArgon Spectrum NIR.png
English: Spectrum of an argon discharge tube in the 520-1100nm range. Taken with a diffraction grating and a RasPi NoIR camera and an amber filter. Wavelengths from 605-680nm show up as red; 680-790nm as yellow; 790-1100nm as blue. The leftmost two bright "yellow" lines were visible with the eye as a deep red, of similar brightness to the next red line over to the left.
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