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| Description: Specimen of white tin (left). Another specimen disintegrated upon transforming to gray tin (right) after it was cooled to and held at a temperature below 13.2oC for an extended period of time. (Photograph courtesy of Professor Bill Plumbridge, Department of Materials Engineering, The Open University, Milton Keynes, England.) Picture Stats: Views: 307 Filesize: 263.26kB Height: 466 Width: 616 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=30244 |