@article {Green:1954-08-01T00:00:00:0003-7028:126,
author = "Green, Milton and Polk, Murray L.",
title = "Logarithmic Sector vs. Photoelectric Densitometer in Measuring Intensity Ratios",
journal = "Applied Spectroscopy",
volume = "8",
number = "3",
year = "1954-08-01T00:00:00",
abstract = "The relative intensities of a group of ten lines of the spectrum of a hydrogen discharge tube have been measured both by conventional photoelectric densitometry and with a logarithmic sector. A statistical analysis of the results showed that, for our instruments, photoelectric densitometry
is slightly more accurate than logarithmic sector intensitometry; the former method gave an average coefficient of variation, in the measurement of an intensity ratio, of 2% whereas the latter method gave an average coefficient of variation of approximately 4%. However, for a great many applications
in spectrochemical analysis the latter method appears to be sufficiently accurate, at the same time having many advantages. It is faster, simpler; intensity ratios are obtained directly without the need of a calibration curve; the method is self calibrating; it does not involve a considerable
amount of complicated equipment that requires frequent attention; intensity ratios can be made over a much greater range for a single exposure of the spectrum.",
pages = "126-130",
url = "http://www.ingentaconnect.com/content/sas/sas/1954/00000008/00000003/art00005",
doi = "doi:10.1366/000370254774634530"
}