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eISBN: 978-1-68108-207-3, 2016 ISBN: 978-1-68108-208-0
Indexed in: EBSCO.
The considerable proliferation of new glasses during the second half of the 20th century (germanate,
vanadate, bismuthate, tellurite, chalchogenide glasses, etc.) brought about the use the plural form of the
generic glass denomination, in order to be able to index each emerging glass family by its proper name, as
well as to classify them methodically. Together with its great compositional versatility, the peculiar
characteristics of glass (non-crystalline structure with short-range order, continuous network with no
intergranular boundaries, isotropy, easy to be formed into a plastic state inside a wide temperature range)
allow for a freedom of design and adaptability that few materials are able to offer. All these circumstances
have contributed to the fact that, in the last seventy years, glass has acquired the multiple and varied
appearance of its new families, without losing neither its original image nor its soda-lime-silica traditional
composition, destined for the huge industrial manufacture of its conventional products.
Helena Cristina de Sousa Pereira Menezes e Vasconcelos and Maria Clara Goncalves
Universidade dos Acores Campus de Ponta Delgada Apartado 1422 PT-9501-801 Ponta Delgada Acores Portugal.