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Bouguer's halo
noun
Bou·guer's halo
\(ˈ)bü¦ge(ə)rz-\
Definition of Bouguer's halo
: a faint white halo of about 32 degrees minimum radius around the antisolar point
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Origin and Etymology of bouguer's halo
after Pierre Bouguer †1758 French mathematician
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