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Jan. 14, 1963 - 14-1-63 Physical Society Exhibition 1963 Ãø€âäœ The annual Exhibition of the Institute of physics and the Physical Society opened this morning at the Old and New Halls of the Royal Horticultural Society, Westminster. Keystone Photo Shows: Shirley King of Birbeck College, London measures the position of a mess of a ball bearings part of the exhibit to demonstrate Professor BernalÃø€â„øs concept of the structure of liquids as coherent homogenous and irregular assemblies of molecules. The large model behind illustrates the formation of the polyhedral holes formed by the closely packed atoms. Seen at the Exhibition today. (Credit Image: © Keystone Pictures USA/ZUMAPRESS.com)