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Tuesday, November 5th, 2024
the Week of Proper 26 / Ordinary 31
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Bible Encyclopedias
Penumbra

1911 Encyclopedia Britannica

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(Lat. paene, almost, umbra, a shadow), in astronomy, the partial shadow of a heavenly body as cast by the sun. It is defined by the region in which the light of the sun is partially but not wholly cut off through the interception of a dark body.

(See ECLIPSE.)

Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Penumbra'. 1911 Encyclopedia Britanica. https://www.studylight.org/​encyclopedias/​eng/​bri/​p/penumbra.html. 1910.
 
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