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Abstract The aim of the study of sound and of some synthetic phosphate glass has been the preparation of glass samples manner abrupt cooling of the Mshorostkhaddmt way to measure the volumetric density was calculated as the volume of particles of each sample Jerami The change of the density and size of the samples Jerami partial system with the percentage of the content of the fifth Alvandiom oxide on the presence of three different regions due to the emergence of a coup against the curve points for each crossing at about 22%, 53% of the Molat This is due to structural changes in the glass during the preparation |