An ghost image continuing to appear in one’s vision after the exposure to the original has ceased.
Tuesday, August 23, 2011
Edison’s Mimeograph
via letterology
“Thomas Edison’s Mimeograph machine was licensed by A.B. Dick who invented the Mimeograph stencil in 1884. With Edison’s support the two of them began advertising in 1888 and sold the machines for $12 to $30 depending upon the size…” Read more here.
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