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Jb Minchew

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Xerography

In 1938, xerography was demonstrated by Chester F. Carlson. With his assistant, Otto Kornei, Carlson used a sulphur coating on a zinc plate, vigorously rubbed with a handkerchief to apply an electrostatic charge. A glass slide was prepared using India ink to write "10-22-38 ASTORIA," then laid on the sulphur surface in a darkened room. After illuminating them with a bright incandescent lamp for a few seconds, the slide was removed. When lycopodium powder was sprinkled on the sulphur surface and blown off, there remained a near-perfect image of the writing. Permanent copies were made by transferring the powder images to wax paper and heating the sheets to melt the wax. Xerox is a term coming from "xerography" which means dry writing and is a trademark.

Aoccdrnig to a rscheearch at a...

Aoccdrnig to a rscheearch at an Elingsh uinervtisy, it deosn't mttaer inwaht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht thefrist and lsat ltteer is at the rghit pclae. The rset can be a toatl msesand you can sitll raed it wouthit porbelm. Tihs is bcuseae we do not raedervey lteter by it slef but the wrod as a wlohe.
Preosllnay I tinhk its cmolpete nenosnese......
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