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Telegraph Line
Telegraph Line
Resource Typeimage
TitleTelegraph Line
Coverage / Year1816 to 1823
DescriptionA twelve-inch length of wire with two sections of glass tubing used as insulation. The glass tubes are sealed at the joints with wax.
InterpretationIn 1816, Sir Francis Ronalds (1788-1873), an English meteorologist, suspended eight miles of telegraph wire by silk strings from wood lattice in his garden. Later he buried 585 feet of this wire three feet underground. The wire was first placed in glass tubing and then put into the center of a tar-filled wooden tube about two feet square. However the telegraph did not work as designed and the wire remained underground for a century. This telegraph line was perhaps the first subterranean telegraph cable It was dug up in the garden of Kelmscott House, Upper Mall, Hammersmith, England. Ronalds wrote numerous scientific articles on his inventions and experiments. These articles would lead to the invention of a telegraphic instrument based on the principle of synchronously revolving discs. The concept of the synchronously revolving discs is essential to the discovery of the X-ray tube, the audion tube, radio and television.
Lesson Plans / ThemesHow we learn about communities;
Learning Standards16 History; 10-12 Science; 13 Science, Technology and Society;
Author or CreatorRonalds, Francis, Sir, 1788-1873
SourceMuseum of Science and Industry, Chicago, Accession File #30.1007
Subject / KeywordsTelegraph; Telegraph cable; Scientific inventions; Communication; Hammersmith, England; Inventions; Electric telegraph
Collection PublisherMuseum of Science and Industry, Chicago;
Further InformationFor any further information related to this record, please contact the Collection Publisher. See http://images.library.uiuc.edu/projects/tdc for more information about this project.
Rights Management Statementhttp://images.library.uiuc.edu/projects/tdc/conditions.htm
Resource Identifier30.1007
CONTENTdm file name35959181982002_TELEGRAP.jpg
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