Ars Technica: Terahertz imaging reveals hidden inscription on 16th-century funerary cross

Ars Technica: Terahertz imaging reveals hidden inscription on 16th-century funerary cross. “In recent years, a variety of cutting-edge non-destructive imaging methods have proved to be a boon to art conservationists and archaeologists alike. Each technique has its advantages and disadvantages. For instance, ground-penetrating radar (radio waves) is great for locating buried artifacts, among other uses, while lidar is useful for creating high-resolution maps of surface terrain. Infrared reflectography is well-suited to certain artworks whose materials contain pigments that reflect a lot of infrared light.”

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