The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 196
... glass a surrogate for natural stones . Although the colours used are often not those found in nature , the glass is handled as though it were jade , the foot of each piece , in particu- lar , being fashioned as though cut from stone ...
... glass a surrogate for natural stones . Although the colours used are often not those found in nature , the glass is handled as though it were jade , the foot of each piece , in particu- lar , being fashioned as though cut from stone ...
Page 197
Natural etching of glass Chemical action and cracking Thermal shock Millefiori glass Glass- making in Venice Optical glass. cosity in the two materials at a given temperature . Ordi- nary glass contains about 15 percent soda to render it ...
Natural etching of glass Chemical action and cracking Thermal shock Millefiori glass Glass- making in Venice Optical glass. cosity in the two materials at a given temperature . Ordi- nary glass contains about 15 percent soda to render it ...
Page 208
Silica glass formers soda - lime- borosilicate alumino- lead silica silicate Nonsilica glass formers * These compositions are typical of the various glass types . † Temperature at which internal stresses are reduced significantly over a ...
Silica glass formers soda - lime- borosilicate alumino- lead silica silicate Nonsilica glass formers * These compositions are typical of the various glass types . † Temperature at which internal stresses are reduced significantly over a ...
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