{"id":14361,"date":"2016-05-24T10:50:29","date_gmt":"2016-05-24T15:50:29","guid":{"rendered":"http:\/\/www.conservators-converse.org\/?p=14361"},"modified":"2016-05-24T10:50:29","modified_gmt":"2016-05-24T15:50:29","slug":"44th-annual-meeting-research-and-technical-studies-may-17-characterizing-the-age-of-ancient-egyptian-manuscripts-through-micro-raman-spectroscopy-by-sarah-goler","status":"publish","type":"post","link":"https:\/\/resources.culturalheritage.org\/conservators-converse\/2016\/05\/24\/44th-annual-meeting-research-and-technical-studies-may-17-characterizing-the-age-of-ancient-egyptian-manuscripts-through-micro-raman-spectroscopy-by-sarah-goler\/","title":{"rendered":"44th Annual Meeting – Research and Technical Studies, May 17, "Characterizing the Age of Ancient Egyptian Manuscripts through micro-Raman Spectroscopy" by Sarah Goler"},"content":{"rendered":"

This is another session that I tweeted (@taradkennedy), so not a long post, but enough to give you the gist at least.
\nMs. Goler was using micro-Raman spectroscopy for dating of Egyptian manuscript material.This is super cool because normally we’d have to take a sample of a manuscript and do carbon dating in order to determine a date of an unknown. With this method, we don’t!
\nSo, how does it work? Essentially measurements are taken of the carbon black ink on a particular manuscript using micro-Raman spectroscopy. Using the difference in the dominant peak heights in the spectrograph with ink samples where the date is known, ratios are plotted and graphed to show dates:
\n

\"Height<\/a>
Height ratio between peaks D & G and document date ranges<\/figcaption><\/figure>
\nSo, the more plots you have, the more dates you have; and the more dates you have, the easier it is to determine the date range of an unknown manuscript.
\nTo test that this would work, Ms. Goler analyzed a manuscript where she didn’t know the date range, but the librarian\/ curator did. Using this method, she was able to date the manuscript within a 70 year range!
\n
\"Got<\/a>
Got the date right +\/- 70 years. That’s pretty damn good and safer for the object than carbon dating.<\/figcaption><\/figure>
\nIt was nondestructive in that the energy level of the laser used didn’t “burn up” the ink sample. One of the issues that a conservator from the University of Michigan else mentioned during the Q&A portion was that in order to get the peak response that Ms. Goler got, she would destroy the sample. Since my experience with Raman spectroscopy is zero, I can’t really speculate why Ms. Goler was successful and this other woman from U of M was not.
\nI did think this is a really promising technique, provided I understood the content correctly. If people have edits or corrections, be sure to comment below!<\/p>\n","protected":false},"excerpt":{"rendered":"

This is another session that I tweeted (@taradkennedy), so not a long post, but enough to give you the gist at least. Ms. Goler was using micro-Raman spectroscopy for dating of Egyptian manuscript material.This is super cool because normally we’d have to take a sample of a manuscript and do carbon dating in order to … Continue reading “44th Annual Meeting – Research and Technical Studies, May 17, "Characterizing the Age of Ancient Egyptian Manuscripts through micro-Raman Spectroscopy" by Sarah Goler”<\/span><\/a><\/p>\n","protected":false},"author":62,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"footnotes":""},"categories":[2,38,16],"tags":[76],"class_list":["post-14361","post","type-post","status-publish","format-standard","hentry","category-annual-meeting","category-research-materials-techniques","category-specialty-sessions","tag-aics-44th-annual-meeting"],"_links":{"self":[{"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/posts\/14361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/users\/62"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/comments?post=14361"}],"version-history":[{"count":0,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/posts\/14361\/revisions"}],"wp:attachment":[{"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/media?parent=14361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/categories?post=14361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/tags?post=14361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}