Needle Telegraph

The growth of the railways from 1825 onwards brought with it a need for a new form of communications that could work over large distances and in any weather. Charles Wheatstone and William Cooke were two Englishmen who on 25th July 1837 demonstrated a system for sending messages using electricity. A set of magnetic needles could be deflected by an electric current such that the needles would point to a particular letter on a grid. This demonstration shows how a 4 needle telegraph - a slightly later model of the July 1837 original - operates and how letters could be communicated. The needle telegraph started a telecommunications revolution based on electrical communication.

Category:

Science & Technology

Tags:

• Needle
• Telegraph
• 1837
• Wheatstone
• Cooke

[ingridsuurbier]

Hello professor Linge,

Nice video this is, just as your presentation in Manchester last year!

Regards,

Rob van Hoof

TelegramsOnline

[ingridsuurbier]

yes very nice video about telegraphy!

[rogermarquee]

thanks!

Good work.

[waytoold1986]

Very informative!

[tinangailalala]

:) this video is very useful: i love it, its excellent