Technique for Photographic Emulsion Calibration: Intensity Factor Tables

Authors: Hodge, Edwin S.; Golob, Helen R.

Source: Applied Spectroscopy, Volume 6, Issue 2, Pages 3-38 (February 1952) , pp. 32-36(5)

Publisher: Society for Applied Spectroscopy

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Nearly all modern methods of quantitative spectro-chemical analysis are based on the measurement of relative spectral intensities. For photographic procedures this is frequently done with an emulsion calibration curve. Two widely used methods for obtaining such a relationship include the preparation of a preliminary curve. In using such a procedure as the stepped-filter method, weakened and unweakened steps of the same line are read on the densitometer. Such readings are taken for 15-30 lines within a limited wavelength region covering the entire density range.

Document Type: Research Article


Affiliations: Department of Research in Chemical Physics, Mellon Institute, Pittsburgh 13, Pa.

Publication date: February 1, 1952

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