This site from PhotographyTips.com offers an excellent and detailed definition of digital photography and many links to more useful information on the topic.

The origins of the cameras we use today were invented in the 19th century. Or were they? A millenia before, Arab scientist Alhazen was using the camera obscura to duplicate images, with Leonardo da Vinci following suit 500 years later...

Ever taken a picture of a nice large full Moon, only to find that it looks like a small dot on your finished photograph? This site explains why, and offers tips on taking good pictures of the Moon.

Read a biography of George Eastman and find out how his inventions and innovations revolutionized photography.