File:Murray Shutter Telegraph 1795.png
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Murray_Shutter_Telegraph_1795.png (670 × 554 pixels, file size: 42 KB, MIME type: image/png)
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Summary
[edit]DescriptionMurray Shutter Telegraph 1795.png |
English: A diagram of the six shutter telegraph invented by Lord George Murray in 1795, and used by the British Admiralty to communicate from London to the English coast from then until 1816. For more about this system, see http://en.wikipedia.org/wiki/Semaphore_line#U.K. and it's references. |
Date | |
Source | From the article "Lieutenant Watson's Telegraph", Mechanics' Magazine, No. 222, published by Knight and Lacey, London, page 296. See: https://books.google.com/books?id=rNZQAAAAYAAJ&pg=PA298 |
Author | Touchup by myself (in USA) from screenshot (in USA) from Google books of this PD (life + 70) artwork by unknown author in Mechanics' Magazine. |
Licensing
[edit]Public domainPublic domainfalsefalse |
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:51, 2 May 2011 | 670 × 554 (42 KB) | Heliograph (talk | contribs) | {{Information |Description ={{en|1=A diagram of the six shutter telegraph invented by Lord George Murray in 1795, and used by the British Admiralty to communicate from London to the English coast from then until 1816. For more about this system, see ht |
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