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A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid for maritime pilots at sea or on inland waterways.
History, Technology & Measurement
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lighthouses light used lens lights lenses first built also lamp often tower source fresnel united construction use structure designed system
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Lighthouse | is a | tower | 0.90 | text |
| at Horton Point Light | instance of | a smaller structure may be placed on top | 0.80 | text |
| Orient Point Light are used in cold climates | instance of | steel caisson lighthouses | 0.80 | text |
| a river | instance of | Ranges can be used to precisely align a vessel within a narrow channel | 0.80 | text |
| cliff-tops | instance of | off the coast of Scotland.Other lighthouses are built on coastal land | 0.80 | text |
| such as Point Vicente Lighthouse in California | instance of | off the coast of Scotland.Other lighthouses are built on coastal land | 0.80 | text |
| or may | instance of | off the coast of Scotland.Other lighthouses are built on coastal land | 0.80 | text |
| like the lighthouse at Withernsea in the East Riding of Yorkshire | instance of | off the coast of Scotland.Other lighthouses are built on coastal land | 0.80 | text |
| England | instance of | off the coast of Scotland.Other lighthouses are built on coastal land | 0.80 | text |
| be built inland to avoid the risk of collapsing into the sea | instance of | off the coast of Scotland.Other lighthouses are built on coastal land | 0.80 | text |
| Lighthouse | related to Ancient lighthouses | Before | 0.60 | section |
| Lighthouse | related to Ancient lighthouses | Since | 0.60 | section |
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