From Smithsonian:
Now, as Jeff Farrell reports for the Independent, a team of researchers is using new technology to uncover texts that were erased and written over by the monks who lived and worked at the monastery. Many of these original texts were written in languages well known to researchers—Latin, Greek, Arabic—but others were inscribed in long-lost languages that are rarely seen in the historical record.
Manuscripts with multiple layers of writing are known as palimpsests, and there are about 130 of them at St. Catherine’s Monastery, according to the website of the Early Manuscript Electronic Library, which has been leading the initiative to uncover the original texts. As Richard Gray explains in the Atlantic, with the rise of Islam in the 7th century, Christian sites in the Sinai Desert began to disappear, and Saint Catherine’s found itself in relative isolation. Monks turned to reusing older parchments when supplies at the monastery ran scarce.
To uncover the palimpsests’ secret texts, researchers photographed thousands of pages multiple times, illuminating each page with different-colored lights. They also photographed the pages with light shining onto them from behind, or from an oblique angle, which helped “highlight tiny bumps and depressions in the surface,” Gray writes. They then fed the information into a computer algorithm, which is able to distinguish the more recent texts from the originals.
Since 2011, researchers have photographed 74 palimpsests, which boast 6,800 pages between them. And the team’s results have been quite astonishing. Among the newly revealed texts, which date from the 4th to the 12th century, are 108 pages of previously unknown Greek poems and the oldest-known recipe attributed to the Greek physician Hippocrates. (Read more.)
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