Joined: Wed Feb 25, 2009 5:53 pm Posts: 175 Location: Toronto
Brian wrote:
That is a good thing.... that way the smallest value wavelength is on the left side, just as you'd read the scale in a spectral graph..
I don't know why.. but whenever I think of light/spectra, my brain wants to order it on the basis of left-to-right being lowest-to-highest energy per quanta/photon... Irregardless of how many spectrophotometer knobs i've played with over the years.
Hey, thats a good question... I know you wouldn't be able to get the nice continuous graphs you share with us... but could I use an old spec20 spectrophotometer to measure transmittance and look for certain peaks/troughs in a spectra?! Would be a FANTASTIC way to get diagnostic spectral data without having to generate a whole bunch of unnecessary graph when doing ID!! (and I wont even have to wash any cuvettes )
but could I use an old spec20 spectrophotometer to measure transmittance and look for certain peaks/troughs in a spectra?! Would be a FANTASTIC way to get diagnostic spectral data without having to generate a whole bunch of unnecessary graph when doing ID!! (and I wont even have to wash any cuvettes )
OMG! Reading off transmission and writing it down by hand at each wavelength. Having to re-calibrate at each wavelength. And every time you pull the cuvette out for re-calibration, and put it back in, you'd have to be sure the gem was in the same location and orientation. This would have to be the most tedious method to collect a spectrum ever.
And I'm ok with plotting low to high energy in eV left-to-right, if the situation calls for it. But frequency and cm-1 scales, yuck, yuck, yuck.
I'm afraid I can't. However that's what I was teached a few month ago at gem classes (in France). I didn't discuss it more deeply as I just don't care much...lol
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