- Alhazred
- Feb 16, 2011
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nobody imagines what their oils and hands can do to things., but it really is profound, especially with older things.
Just reading an old copy of dune, the copy I have is from 1984 and has a bunch of movie advertising on it lol, and just turning the page in the wrong place can fade the lettering.
Given the widespread belief that routine handling of paper with bare hands chemically damages it, it is telling that our research uncovered no scientific evidence supporting this notion. The closest citation on the subject found was an article entitled, "Fingerprints on Photographs" in which Klaus Hendriks and RĂ¼tiger Krall (1993) state that a fingerprint could damage a silver image if the salts in sweat, particularly sodium chloride, managed to penetrate through the gelatin layer. Since the surface of paper is almost always protected by a layer of gelatin (or some other sizing agent), sodium chloride would have to permeate this barrier before it could interact with the cellulose beneath, and the corrosion potential of cellulose is not remotely as great as that of silver. As discovered by Hendriks and Krall, the other necessary component for the silver corrosion reaction is oxygen, and it can be argued that bound sheets of paper in closed books are not exposed to high levels of environmental oxygen for long periods of time, and neither are unbound sheets stored along with other pieces of paper in archival storage folders and boxes.
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