Haidinger brushes


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Hai·din·ger brush·es

(hī'ding-ĕr),
the perception of two dark yellowish brushes or sheaves radiating about 5 degrees from the point of fixation when an evenly illuminated surface, such as the blue sky, is viewed through a polarizing lens.

Hai·din·ger brush·es

(hī'ding-er brŭsh'ĕz)
The perception of two dark yellowish brushes or sheaves radiating about 5 degrees from the point of fixation when an evenly illuminated surface, such as the blue sky, is viewed through a polarizing lens.

Haidinger,

Wilhelm von, Austrian mineralogist, 1795-1871.
Haidinger brushes - the perception of two dark yellowish brushes when an evenly illuminated surface is viewed through a polarizing lens.