Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Lens
|
| gptkbp:category |
Lens
|
| gptkbp:designedBy |
gptkb:Augustin-Jean_Fresnel
|
| gptkbp:diameter |
approximately 0.5 meters
|
| gptkbp:feature |
concentric rings
prismatic design |
| gptkbp:height |
187.5 mm
|
| https://www.w3.org/2000/01/rdf-schema#label |
fifth order Fresnel lens
|
| gptkbp:introducedIn |
19th century
|
| gptkbp:lowerAward |
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:Edgartown_Harbor_Light
|
| gptkbp:bfsLayer |
5
|