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Umbra, Penumbra and Antumbra

Distinct parts of a shadow.

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Wikipedia | Umbra, Penumbra and Antumbra

Statements about Umbra, Penumbra and Antumbra

Instance Of

Group

Has Part(s)

Penumbra
Umbra
Antumbra

Described by Source

Otto's Encyclopedia
Statement Is Subject Of
:
Q23863965
Encyclopædia Britannica 11th Edition
Powered byWikidataWikidata
Statement Is Subject Of
:
1911 Encyclopædia Britannica/Umbra