Statements (16)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:Lens
|
| gptkbp:category |
gptkb:Lens
|
| gptkbp:component |
lighthouse lighting apparatus
|
| gptkbp:designedBy |
gptkb:Augustin-Jean_Fresnel
|
| gptkbp:diameter |
0.5 meters
|
| gptkbp:height |
187.5 mm
|
| gptkbp:introducedIn |
gptkb:19th_century
|
| gptkbp:lowerAward |
gptkb:fourth-order_Fresnel_lens
|
| gptkbp:material |
gptkb:glass
|
| gptkbp:rank |
sixth-order Fresnel lens
|
| gptkbp:usedFor |
harbor lights
river lights |
| gptkbp:usedIn |
lighthouses
|
| gptkbp:bfsParent |
gptkb:Blakistone_Island_Light
|
| gptkbp:bfsLayer |
8
|
| http://www.w3.org/2000/01/rdf-schema#label |
fifth-order Fresnel lens
|