Curator: This is an X-radiograph of "St. Peter and Donor," attributed to Jan Mostaert, housed here at the Harvard Art Museums. Editor: Wow, an x-ray! It's like seeing the ghost of a painting, all secrets and hidden layers revealed. Gives it this ethereal, slightly spooky vibe. Curator: Indeed. The radiograph allows us to analyze the underdrawing and any alterations the artist made during the painting process. Note the density variations—they indicate the use of lead white and other pigments. Editor: You know, looking at it this way, it feels almost like a forensic study of art, like art CSI. You get to peel back time. Curator: Precisely. Radiography gives conservators invaluable data, informing preservation and restoration efforts with a non-destructive method. Editor: Well, I'm left feeling like I've glimpsed a deeper truth, like the painting itself is now slightly less of a mystery and slightly more magical. Curator: A fitting sentiment, considering the subject is a saint and his patron, brought to us through the marvels of science.