Coherer: Difference between revisions
From ETHW
(New page: '''''This article is a stub. You can help the GHN by expanding it.''''' Paris, France. On 24 November 1890, Édouard Branly invented the Coherer, a device important in the early developme...) |
No edit summary |
||
| Line 1: | Line 1: | ||
'''''This article is a stub. You can help the GHN by expanding it.''''' | '''''This article is a stub. You can help the GHN by expanding it.''''' | ||
Paris, France. On 24 November 1890, Édouard Branly invented the Coherer, a device important in the early development of wireless telegraphy. The device, a glass tube with terminals containing metal filings, acts as an insulator unless acted upon by an electric spark, when it becomes a conductor. Tapping the device separates the filings and it again becomes an insulator. | Paris, France. On 24 November 1890, Édouard Branly invented the Coherer, a device important in the early development of wireless telegraphy. The device, a glass tube with terminals containing metal filings, acts as an insulator unless acted upon by an electric spark, when it becomes a conductor. Tapping the device separates the filings and it again becomes an insulator. | ||
[[Category:Communications]] | |||
[[Category:Telegraphy]] | |||
Revision as of 15:53, 5 January 2009
This article is a stub. You can help the GHN by expanding it.
Paris, France. On 24 November 1890, Édouard Branly invented the Coherer, a device important in the early development of wireless telegraphy. The device, a glass tube with terminals containing metal filings, acts as an insulator unless acted upon by an electric spark, when it becomes a conductor. Tapping the device separates the filings and it again becomes an insulator.
