Email Print Share
April 1, 2011

Laboratory replicas of watercolor brushstrokes before (below) and after (above) fading in sunlight.

Laboratory replicas of watercolor brushstrokes containing cochineal (Carmine Naccarat) and madder lakes before (below) and after (above) fading for 20 months in a sun-exposed window.

Credit: Kristi Dahm, The Art Institute of Chicago

Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.

Additional information about general usage can be found in Conditions.

Also Available:
Download the high-resolution JPG version of the image. (3.1 MB)

Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.

Related story: Capturing the Art