Warren, Samuel Edward, 1831-1909. [from old catalog] · New York, J. Wiley & sons · leaf 204
SHADES AND SHADOWS. 429 rate of illumination of the retina, for a unit of surface, is thesame in both cases. e. In discussing this nice point, on which learned authorsdiffer, care must be taken not to confound aggregate amount,and consequent dazzling effects of brilliancy, with its rate or…
Shades and shadows
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