Multimedia Gallery
July 19, 2005
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Margaret Ingalls (left) and Steve Finkelman measure properties of corn leaves using the N-Checker.
Margaret Ingalls (left) and Steve Finkelman measure the properties of corn leaves using the N-Checker in a field prepared by Tim Smith, a soil scientist at the University of Illinois, Urbana-Champaign.
Credit: Photo by Aaron Woodbury
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.
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