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For the new study, published April 26 in the Journal of Physics: Photonics, the researchers used pump-probe microscopy to analyze samples of cadmium yellow paint subjected to an artificial aging process.

From Van Gogh’s sunflowers to Edvard Munch’s “The Scream,” there’s no shortage of seminal artwork that was made with a striking hue known as cadmium yellow.

Monet’s rich yellow sunsets and landscapes could only be painted after the invention of cadmium yellow in the early 19th century.

The pared down palette contrasted nicely with the odd flash of bright cadmium yellow or azure to give this slick collection a youthful feel.

The analysis, Dr. Mass said, has implications for Impressionist through Expressionist paintings made between the 1880s and the 1920s painted with cadmium yellow, 20 percent of which she estimates are experiencing similar phenomena.