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Category:Electrical telegraphy

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[[Image:Electric Telegraph Military Beardslee Telegraph Attribution.jpg|thumb|right|An electric telegraph developed by George Beardslee in 1862 - Image by Rebecca Robbins Raines and The U.S. Army Signal Corps  ]]
 
[[Image:Electric Telegraph Military Beardslee Telegraph Attribution.jpg|thumb|right|An electric telegraph developed by George Beardslee in 1862 - Image by Rebecca Robbins Raines and The U.S. Army Signal Corps  ]]
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The long-distance transmission of messages or information via electrical signals, usually over telecommunications lines or radio
  
 
[[Category:Telegraphy|{{PAGENAME}}]]
 
[[Category:Telegraphy|{{PAGENAME}}]]

Latest revision as of 21:21, 14 January 2013

An electric telegraph developed by George Beardslee in 1862 - Image by Rebecca Robbins Raines and The U.S. Army Signal Corps
An electric telegraph developed by George Beardslee in 1862 - Image by Rebecca Robbins Raines and The U.S. Army Signal Corps

The long-distance transmission of messages or information via electrical signals, usually over telecommunications lines or radio

Pages in category "Electrical telegraphy"

The following 7 pages are in this category, out of 7 total.

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Media in category "Electrical telegraphy"

This category contains only the following file.