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One Way Telegraph
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Description: "A long ribbon of white paper is attached on a spool, and connected to a receiver that is wired to a switch. When the switch is closed, a signal is sent to the receiver, and it marks either a dot or dash on the paper." -Avery 1895
Source: Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 568
Keywords: telegraph, white, paper, one, way
Copyright: 2009, Florida Center for Instructional Technology. See license.
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Clipart ETC is a part of the Educational Technology Clearinghouse and is funded by various grants. Produced by the Florida Center for Instructional Technology, College of Education, University of South Florida. Email the project manager.