http://www.artnews.com/2013/04/03/how-many-light-bulbs-does-it-take-to-discolor-a-van-gogh/
Conservators at the Van Gogh Museum in Amsterdam were concerned with the darkening of bright yellow colors on Van Gogh's paintings.So they enlisted the help of scientist at the University of Antwerp in Belgium. There were online reports that the exposure of LED lighting caused the darkening but it was actually the aging of the chrome yellow pigment. Koen Janssens, lead researcher at Antwerp, said it was because the brighter chrome yellow pigment had higher traces of sulfur which them more susceptible to chemical reactions. With this information, the conservators can decide what to do with the kind of lighting they should have in the museum. I thought that this article was interesting because of the detective-slash-scientific work they did to try to figure out why the bright yellows were darkening. It just gives museums more precaution on lighting and that these little things are good to know to conserve the work of art.
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