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How can a jar of pigment help question a painting's date?

Two paints can look alike while carrying different material histories. A reference collection such as Harvard’s Forbes pigments helps conservators compare what a painting contains with known materials. For dating, the key is not simply finding a surprising pigment: it also matters whether that material belongs to the original paint or a later intervention.

3–7 min

Questions you could explore

  • Why would a modern pigment in a retouched patch mean something different from the same pigment throughout an original layer?

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Arts and culture

How does a flat drawing make a corridor look deep?

Lines drawn on a flat page can suggest a hallway extending into the distance. In one-point perspective, receding edges relate to a vanishing point and a horizon, linking the drawing to a particular viewpoint.

3–5 min
Arts and culture

What can infrared reveal beneath a painting?

A finished painting can conceal decisions made before its visible surface took shape. Infrared imaging sometimes reveals earlier marks, but what appears depends on how the different materials interact with the light.

4–5 min
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