Saturday, August 7, 2021

OCT Scans Reveal Painting Layers

OCT scanning is a non-invasive technique used by conservators for analyzing the surface layers of a painting. 

OCT stands for optical coherence tomography, and it reveals a cross section of the top layers so they can distinguish yellowing varnish layers from pigment layers. 

The National Gallery's Kristina Mandy demonstrates the technique in this YouTube video.

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