Difference between revisions of "Flint glass"
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== Description == | == Description == | ||
| − | An optical quality glass with a high refractive index and low dispersion. Flint glass | + | An optical quality glass with a high refractive index and low dispersion. Flint glass was a typically a [[potash-lead glass]] used for optical lenses and crystal glassware. However, since the manufacture and disposal of lead glass are a source of pollution, modern flint glas contain a wide variety of non-lead metal oxides including titanium dioxide and zieconium dioxide. |
See also [[crystal glass|crystal]]. | See also [[crystal glass|crystal]]. | ||
| Line 18: | Line 18: | ||
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | | + | | 2.9-5.9 g/ml |
|- | |- | ||
! scope="row"| Refractive Index | ! scope="row"| Refractive Index | ||
| − | | 1. | + | | 1.45-2.00 |
|} | |} | ||
Revision as of 13:27, 19 October 2023
Description
An optical quality glass with a high refractive index and low dispersion. Flint glass was a typically a Potash-lead glass used for optical lenses and crystal glassware. However, since the manufacture and disposal of lead glass are a source of pollution, modern flint glas contain a wide variety of non-lead metal oxides including titanium dioxide and zieconium dioxide.
See also crystal.
Synonyms and Related Terms
cristal de chumbo com potássio (Port.)
Physical and Chemical Properties
| Melting Point | 630 C (softens) |
|---|---|
| Density | 2.9-5.9 g/ml |
| Refractive Index | 1.45-2.00 |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 383
- Walter C. McCrone, John Gustave Delly, The Particle Atlas, W. McCrone Associates, Chicago, IV, 1972
- Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
- Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996