Using Near-Infrared Imaging, Researchers Discover Hidden Figure in Medieval Prayer Book

New research using near-infrared imaging has revealed hidden paintings of Yolande of Anjou, first wife of Duke Francis I of Brittany, in a medieval prayer book, Live Science reports. Scientists at the University of Cambridge, where the book is held in the collection of the Fitzwilliam museum, noticed a darker area on one of the pages. It ultimately proved to be Yolande’s headdress painted over in azurite, which made it stand out from the surrounding ultramarine blue.
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