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Thursday, November 21st, 2024
the Week of Proper 28 / Ordinary 33
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Bible Encyclopedias
Black Drop

1911 Encyclopedia Britannica

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In astronomy, an apparent distortion of the planet Mercury or Venus at the time of internal contact with the limb of the sun at the beginning or end of a transit. It has been in the past a source of much perplexity to observers of transits, but is now understood to be a result of irradiation, produced by the atmosphere or by the aberration of the telescope.

Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Black Drop'. 1911 Encyclopedia Britanica. https://www.studylight.org/​encyclopedias/​eng/​bri/​b/black-drop.html. 1910.
 
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