Statements (20)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:glass
|
| gptkbp:contains |
gptkb:silica
alumina potassium oxide lead oxide |
| gptkbp:developedBy |
18th century
|
| gptkbp:has_high |
dispersion
refractive index |
| https://www.w3.org/2000/01/rdf-schema#label |
Flint glass
|
| gptkbp:is_more |
dense than crown glass
|
| gptkbp:namedAfter |
flint nodules (historically used as silica source)
|
| gptkbp:replacedBy |
lead-free glass in some applications
|
| gptkbp:type |
gptkb:glass
|
| gptkbp:used_in |
chandeliers
cut glassware |
| gptkbp:usedFor |
prisms
optical lenses decorative glassware |
| gptkbp:bfsParent |
gptkb:Refracting_telescope
|
| gptkbp:bfsLayer |
7
|