Fresnel lens

https://www.wikidata.org/wiki/Q14672

Field Hierarchy

Parent
Biology 34.8M papers	Physics 31.7M papers	Engineering 23.9M papers	Geology 9.1M papers
Optics 7.9M papers	Paleontology 5.3M papers	Petroleum engineering 466k papers	Lens (geology) 161k papers
Current
Fresnel lens 3,495 papers
Child

Trends

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History