| Haidinger's brushes | 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 polarising lens. (05 Mar 2000) |
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| Haidinger, Wilhelm von | <person> Austrian mineralogist, 1795-1871. See: Haidinger's brushes. (05 Mar 2000) |
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