Baily's beads

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Baily's beads:

see eclipseeclipse
[Gr.,=failing], in astronomy, partial or total obscuring of one celestial body by the shadow of another. Best known are the lunar eclipses, which occur when the earth blocks the sun's light from the moon, and solar eclipses, occurring when the moon blocks the sun's light
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Baily's beads

A string of brilliant points of sunlight sometimes seen, very briefly, at the Moon's edge just before or just after totality in a solar eclipse. They are the result of sunlight shining through the valleys on the Moon's limb as the Sun just disappears or emerges from behind the Moon. They were first described by Francis Baily after the eclipse of 1836. See also diamond-ring effect.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Baily's beads

[′bāl‚ēz ¦bēdz]
(astronomy)
Bright points of sunlight appearing around the edge of the moon just before and after the central phase of a total solar eclipse.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.