. Carnegie Institution of Washington publication. 18|00 19100 20100. i slop I9JOO 20JOO FIG. 7. FIG. 8. The changes in the position of the crests in the case of the sulphates, nitrates, and acetates is illustrated in figure 11, in which a typical curve from each family of salts is given. While these measurements by Dr. Wick do not include all the spectra for which such determinations are possible, they suffice to demonstrate the essential uniformity of type of the envelopes and to show that within a given family, such as the double sulphates or the nitrates, the crests occupy the same region i
. Carnegie Institution of Washington publication. 18|00 19100 20100. i slop I9JOO 20JOO FIG. 7. FIG. 8. The changes in the position of the crests in the case of the sulphates, nitrates, and acetates is illustrated in figure 11, in which a typical curve from each family of salts is given. While these measurements by Dr. Wick do not include all the spectra for which such determinations are possible, they suffice to demonstrate the essential uniformity of type of the envelopes and to show that within a given family, such as the double sulphates or the nitrates, the crests occupy the same region in the spectrum. It will be seen, when we come to the consideration of the detailed structure of these fluores- cence spectra, that there is a slight but definite shift of all the bands with molecular weight. Spectrophotometric measurements of single unresolved bands, prac- ticable with accuracy only in the case of some of the brightest, show the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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