visual purple
visual purple: see vision.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved. More on visual purple from Fact Monster:
- vision - vision vision, physiological sense of sight by which the form, color, size, movements, and distance ...
- Selig Hecht - Hecht, Selig Hecht, Selig, 1892–1947, American biophysicist, b. Glogow, Austria (now Poland). ...
- night blindness - night blindness night blindness, inability to see normally in subdued light. It is usually a result ...
- vitamin: Vitamin A - Vitamin A Vitamin A (retinol), a fat-soluble lipid, is either derived directly from animal foods ...
- vision: Vision in Humans - Vision in Humans The human eye functions somewhat like a camera; that is, it receives and focuses ...
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