Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
scientific instrument
|
| gptkbp:alternativeName |
submarine periscope
trench periscope |
| gptkbp:component |
tubes
mirrors prisms |
| https://www.w3.org/2000/01/rdf-schema#label |
Periscope (historically)
|
| gptkbp:improves |
Frederick Perks
|
| gptkbp:introducedIn |
19th century
|
| gptkbp:inventedBy |
gptkb:Jules_Carpentier
gptkb:Simon_Lake |
| gptkbp:principle |
reflection of light
|
| gptkbp:relatedTo |
periscope rifle
periscopic sight |
| gptkbp:replacedBy |
electronic periscope
|
| gptkbp:usedDuring |
gptkb:World_War_I
gptkb:World_War_II |
| gptkbp:usedFor |
observing from concealed positions
|
| gptkbp:usedIn |
submarines
armored vehicles trenches |
| gptkbp:bfsParent |
gptkb:Twitter_mobile_app
|
| gptkbp:bfsLayer |
7
|