rod

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Introduction References & Edit History Related Topics

Images

photoreceptor; rod and cone

structure of the retina

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Figure 13: A Maxim machine gun, belt-fed and water-cooled, operated by German infantrymen, World War I.

7 Deadliest Weapons in History

Berries and leaves of the bittersweet nightshade (Solanum dulcamara) plant. Poisonous plant

7 of the World’s Deadliest Plants

Shadow of a man holding large knife in his hand inside of some dark, spooky buiding

7 of History's Most Notorious Serial Killers

Internet http://www blue screen. Hompepage blog 2009, history and society, media news television, crowd opinion protest, In the News 2009, breaking news

Who Invented the Internet?

Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society

12 Novels Considered the “Greatest Book Ever Written”

Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar

Ten Days That Vanished: The Switch to the Gregorian Calendar

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

rod: Related Content

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Photos

photoreceptor; rod and cone

structure of the retina

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Topics

scotopsin rhodopsin porphyropsin prelumirhodopsin lumirhodopsin metarhodopsin neuroepithelium retina blind spot macula lutea cone

Key People

George Wald

American biochemist