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A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis. Lenses are made from materials such as glass or plastic and are ground, polished…
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lenses image focal object optical displaystyle point surface curvature aberration length light spherical thin distance used axis frac convex two
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Lens | is a | transmissive optical device that focuses or disperses a light beam by means of refraction | 0.90 | text |
| Lens | is a | rock crystal artifact dated to the 7th century BCE which may or may not have been used as a magnifying glass | 0.90 | text |
| Lens | is a | special type of plano-convex lens | 0.90 | text |
| Lens | is a | focal length | 0.90 | text |
| Lens | is a | collection of simple lenses of different shapes and made of materials of different refractive indices | 0.90 | text |
| glass or plastic | instance of | Lenses are made from materials | 0.80 | text |
| are ground | instance of | Lenses are made from materials | 0.80 | text |
| polished | instance of | Lenses are made from materials | 0.80 | text |
| or molded to the required shape | instance of | Lenses are made from materials | 0.80 | text |
| telescopes | instance of | or explosive lenses.Lenses are used in various imaging devices | 0.80 | text |
| binoculars | instance of | or explosive lenses.Lenses are used in various imaging devices | 0.80 | text |
| and cameras | instance of | or explosive lenses.Lenses are used in various imaging devices | 0.80 | text |
These clusters group vocabulary that occurs around closely connected concepts in the source material.
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