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| | Photography - MSN Encarta |
 | | Photography, method of picture making developed in the early 19th century, based on principles of light, optics, and chemistry. |
 | | The word photography comes from Greek words and means “drawing with light.” Photographs serve as scientific evidence, conveyers of news, historical documents, works of art, and records of family life. |
 | | Nearly all forms of photography are based on the fact that certain chemicals are photosensitive—that is, they change in some way when exposed to light. |
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