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You can spend it any way you wish, but you only spend it once." – Lillian Dickinson. "Life is about making an impact, not making an income." – Kevin Kruse. "There are no regrets in life, just ...
Duplicating machines were the predecessors of modern document-reproduction technology. They have now been replaced by digital duplicators, scanners, laser printers and photocopiers, but for many years they were the primary means of reproducing documents for limited-run distribution. The duplicator was pioneered by Thomas Edison and David ...
In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject appear darkest and the darkest areas appear lightest. [1] This reversed order occurs because the extremely light-sensitive chemicals a camera film must use to capture an image quickly enough ...
Microform. Digital scanning of microfilm. A microform is a scaled-down reproduction of a document, typically either photographic film or paper, made for the purposes of transmission, storage, reading, and printing. Microform images are commonly reduced to about 4% or 1⁄25 of the original document size. For special purposes, greater optical ...
Drawing up a comprehensive list of words in English is important as a reference when learning a language as it will show the equivalent words you need to learn in the other language to achieve fluency. A big list will constantly show you what words you don't know and what you need to work on and is useful for testing yourself.
Xerox was founded in 1906 in Rochester, New York, as The Haloid Photographic Company. [11] It manufactured photographic paper and equipment. In 1938, Chester Carlson, a physicist working independently, invented a process for printing images using an electrically charged photoconductor-coated metal plate [12] and dry powder "toner".
Xerography is a dry photocopying technique. [1] Originally called electrophotography, it was renamed xerography—from the Greek roots ξηρός xeros, meaning "dry" and -γραφία-graphia, meaning "writing"—to emphasize that unlike reproduction techniques then in use such as cyanotype, the process of xerography used no liquid chemicals.
Both RetinalGraph and Photostat machines consisted of a large camera that photographed documents or papers and exposed an image directly onto rolls of sensitized photographic paper that were about 350 feet (110 m) long. A prism was placed in front of the lens to reverse the image. After a 10-second exposure, the paper was directed to developing ...