Image: Old Pottery surface with 90 degree cracks
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Old_Pottery_surface_with_90_degree_cracks.jpg (735 × 415 pixels, file size: 113 KB, MIME type: image/jpeg)
Description: Surface of old white-glazed potshard retrieved from river Thames, showing cracks mostly joining at 90 degrees (implying inelastic glaze) with a few in isolated areas joining at 120 degrees.
Author: Ian Alexander
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes
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