halation


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halation

 [hah-la´shun]
indistinctness of the visual image caused by strong illumination coming from the same direction as the object being viewed.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ha·la·tion

(hă-lā'shŭn),
Blurring of the visual image by glare.
Farlex Partner Medical Dictionary © Farlex 2012

ha·la·tion

(hă-lā'shŭn)
Blurring of the visual image by glare.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
THE ONE TO BEAT Halation has rock-solid form in big handicaps this season
However, every regiment staff had its own intelligence office and reconnaissance halation. Their efforts were limited as well, and the recon battalions were often relegated to scout an area of upcoming operations, provide security for the convoys and limited ambush activities.
Ramallah -- PNN - On Friday three children were injured many were treated for the effects of tear gas in halation as Israeli troops attacked anti-wall protests organized in a number of West Bank communities.
This sheet also helped to reduce the effect of halation in the images as a result of direct sunlight on the soil surface.
(6.) Describing the striking glow of light at windows and doors in Emmons's photographs, Peladeau explains that Emmons "apparently preferred not to use anti-halation film since the halation (bouncing back of light through the emulsion after hitting the back of the glass plate) gave a halo-like effect to the highlights of her photographs which she enjoyed" (13).
Artists have long explored the visual peculiarities, such as halation, of camera obscura images.
Halation removal eliminates 98 percent of reflectivity and the image improvement function can solve low-contrast or illumination problems.
Our bodies still buzz; we still emanate radio waves in concentric patterns, a halation of sound, spreading beyond what first spurred it.
When I write during periods of insomnia, there are passages burned away by too much looking, or overexposed, an effect that photographers call halation. I worry that whatever emotion is keeping me awake, grief or rage or fear, will burn everything up; the poet's eye transformed into the overheated lens of a microscope, gobbling up the invisible, bits of world filled with shining or pale blue twinklings, rare squiggles and streaks of living matter--like these two lips rapidly opening and closing: a kiss just before it burns up.