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Images Dated 19th July 2004

Available as Framed Prints, Photos, Wall Art and Gift Items

Choose from 91 pictures in our Images Dated 19th July 2004 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.


open-uri20120928-2400-c8svxm Featured 19 Jul 2004 Print

open-uri20120928-2400-c8svxm

2004 British Forumla 3 (F3) Championship
Rds 15 & 16, Oulton Park, Cheshire. 17th - 18th July.
James Rossiter (Dallara Opel Speiss). Rear Action.
World Copyright: Glenn Dunbar/LAT Photographic
ref: 35mm Transparency A17

Telegraph receiver Featured 19 Jul 2004 Print

Telegraph receiver

Telegraph receiver. Historical artwork of a Breguet telegraph receiver. Messages arrived at the receiver in wires as a series of long and short electric pulses. Electromagnets converted the pulses into dashes and dots printed on ticker tape (running from the spool at top through the mechanism at centre). In Morse code, each letter and number is represented by a combination of dots and dashes. Electrical telegraphs were an important application of the newly-discovered electromagnetic force. The first practical telegraph was invented by Samuel Morse in 1837. Published in La Telegraphie Historique (History of Telegraphy) by Alexis Belloc in 1888

© SHEILA TERRY/SCIENCE PHOTO LIBRARY

Wheatstone telegraph system Featured 19 Jul 2004 Print

Wheatstone telegraph system

Telegraph system. Historical artwork of operators using a Wheatstone telegraph system. The Wheatstone automatic telegraph consisted of a tape perforator, transmitter and receiver. A series of five wires (upper centre) allowed operators to enter a message using 20 different letters. Electric telegraphs were an important application of the newly-discovered electromagnetic force. Sir Charles Wheatstone patented the five-needle telegraph in 1837 with William Fothergill Cooke. This was the same year that Samuel Morse invented his telegraph in the USA. Published in La Telegraphie Historique (History of Telegraphy) by Alexis Belloc in 1888

© SHEILA TERRY/SCIENCE PHOTO LIBRARY