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| Description: (a) To make each 8.4-m primary mirror for the Large Binocular Telescope II on Mount Graham in Arizona, 40,000 pounds of glass are loaded into a rotating furnace and heated to 1450 K (2150°F). This image shows glass fragments loaded into the cylindrical furnace Picture Stats: Views: 668 Filesize: 650.52kB Height: 878 Width: 1350 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=15895 |