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by gretchengehrke on SpectralWorkbench.org SW
Oil Testing Kit, 5W30 and 20W50 and "unknown"; spectra smoothed and calibrated by white bike light.
So was the unknown 20w50? If so, this worked pretty well as a repeatability/distinguishability test!
After equalizing height, that is.
Or area, actually!
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So was the unknown 20w50? If so, this worked pretty well as a repeatability/distinguishability test!
After equalizing height, that is.
Or area, actually!