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Kaynak: telegraph.co.ukAn electrical
telegraph is a
telegraph that uses electrical signals , usually conveyed via telecommunication lines or radio .
Kaynak: Electrical telegraphA semaphore
telegraph, optical
telegraph, shutter
telegraph chain, Chappe
telegraph, or Napoleonic semaphore is a system of conveying
Kaynak: Semaphore lineAn engine order
telegraph or E.O.T., often also chadburn is a communications device used on a ship (or submarine ) for the pilot on the
Kaynak: Engine order telegraphThe first ideas for a
telegraph were launched within the Royal Norwegian Navy in 1848, but by 1852 the plans were public and the
Kaynak: TelenorTelegraph stamps are stamps intended solely for the prepayment of
telegraph fees The customer completed a
telegraph form before handing
Kaynak: Telegraph stamp