From what I understand of the tech specs of both (not an owner of either) the Kindle has a special screen unique to modern e-book readers that mimics the paper-

From what I understand of the tech specs of both (not an owner of either) the Kindle has a special screen unique to modern e-book readers that mimics the paper-ink reaction to light (i.e. more light is more readable) rather than the iPad's backlit LCD which produces glare under more light. More info: http://en.wikipedia.org/wiki/E_Ink http://en.wikipedia.org/wiki/E_Ink