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Reflected Light Helping Preserve Frescoes

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L’AQUILA, Italy, June 19, 2012 — A new imaging technique works somewhat like thermography in reverse, using reflected mid-infrared light to further refine the restoration of Old Masters. The powerful yet safe imaging tool for artwork diagnostics, called thermal quasi-reflectography (TQR), was developed by the University of L’Aquila, the University of Verona and Italy’s National Institute of Optics in Florence. It captures features not otherwise detectable with the naked eye or current imaging techniques. Part of the fresco by the Zavattaris in the Theodelinda's Chapel. The artworks, executed between...Read full article

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    Published: June 2012
    Glossary
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    thermography
    Thermography is a technique that involves the use of an infrared imaging device, called a thermal camera or infrared camera, to detect and visualize the infrared radiation emitted by objects. This technology allows for the creation of thermographic images, also known as thermograms, where variations in temperature are represented by different colors or shades. The basic principles of thermography are as follows: Infrared radiation emission: All objects with a temperature above absolute zero...
    camerasart restorationartwork diagnosticsChapel of TheodelindaClaudia DaffaraDario AmbrosinidefenseEuropefrescofrescoesImagingItalyItaly’s National Institute of Opticsmid-infrared imaging systemnear-infrared photographyOpticsphotonicsPiero della Francescapigment detectionResearch & TechnologyThe Resurrectionthe University of Veronathermal quasi-reflectographythermographyTQRUniversity of L’AquilaZavattari frescos

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