This 50x photo of a crystal of sulphur, resorcinal and azelaic acid received an Image of Distinction designation in the 2013 Nikon Small World Photomicrophotography Competition, which recognizes excellence in photography with the optical microscope. The polarized light image was taken by Dr. John Hart of Hart3D Films and Deptartment of Atmospheric and Oceanic Science, Univ. of Colorado, Boulder.
