What do you all think about the Public Laboratory for Open Technology and Science (PLOTS) spectrophotometer design?
-- They have developed instructions for building a basic spectrophotometer from a low-cost webcam, electrical-conduit housing, and a fragment of a DVD as a diffraction grating. Seems like the devil is in the details for something like this and they have paid a fair amount of attention to the details.
Build instructions: http://publiclaboratory.org/wiki/dsk
What about calibration? I think I missed that step in their instructions...
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