| troland | A unit of visual stimulation at the retina equal to the illumination per square millimeter of pupil received from a surface of 1 lux brightness. Origin: L.T. Troland, U.S. Physicist, 1889-1932 (05 Mar 2000) |
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| troland |
the retinal illuminance produced by the image of an object the luminance of which is 1 lumen per square meter for an area of the entrance pupil of 1 square millimeter.
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