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File:Rees's Cyclopaedia - Hooke's optical telegraph.png

Rees's_Cyclopaedia_-_Hooke's_optical_telegraph.png ‎(592 × 558 pixels, file size: 63 KB, MIME type: image/png)

Summary

Description
English: Fig. 1 and 2 from the plate on "Telegraph" in Rees's Cyclopædia, illustrating Robert Hooke's proposal for an optical telegraph system. For further explanatory text, see entry on "TELEGRAPH", volume 35 of the Cyclopædia.
Date1802-1820 (serial publication of the source work)
SourceRees's Cyclopædia, Plates Vol. IV, "TELEGRAPH", Fig. 1 and 2; from a digital scan at https://archive.org/details/cyclopaediaplates04rees
AuthorDelineator:
John Farey, Jr. (1791–1851) wikidata:Q6232718 s:en:Author:John Farey
Alternative names
John Farey
DescriptionBritish engineer and drawer
Date of birth/death20 March 1791 Edit this at Wikidata17 July 1851 Edit this at Wikidata
Location of birth/deathLondon, UKKent, UK
Work location
London Edit this at Wikidata
Authority file
creator QS:P170,Q6232718
Engraver:
Wilson Lowry (1760–1824) wikidata:Q8023126 s:en:Author:Wilson Lowry
Wilson Lowry
Alternative names
Wilson Loury
DescriptionBritish engraver
Date of birth/deathcirca Edit this at Wikidata23 June 1824 Edit this at Wikidata
Location of birth/deathLondon
Authority file
creator QS:P170,Q8023126
This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Cropped, adjusted levels, removed "fig. 1" and "fig. 2", various paper stains and blemishes and digital artifacts, grayscaled. Modifications made by Morgan Riley. The original can be found here: https://archive.org/stream/cyclopaediaplates04rees#page/n325/mode/2up.

Licensing

Public domain

The author died in 1851, so 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 100 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

Public domain
This work is based on a work in the public domain. It has been digitally enhanced and/or modified. This derivative work has been (or is hereby) released into the public domain by its author, Morgan Riley. This applies worldwide.

In some countries this may not be legally possible; if so:

Morgan Riley grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Captions

Illustration showing Robert Hooke's proposed system. At top are various symbols that might be used; ABCE indicates the frame, and D the screen behind which each of the symbols are hidden when not in use.

Items portrayed in this file

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File history

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Date/TimeThumbnailDimensionsUserComment
current16:41, 2 February 2013Thumbnail for version as of 16:41, 2 February 2013592 × 558 (63 KB)Morgan Riley{{Information |Description ={{en|1=Fig. 1 and 2 from the plate on "Telegraph" in Rees's ''Cyclopædia'', illustrating Robert Hooke's proposal for an optical telegraph system. For further explanatory text, see entry on "TELEGRAPH"...
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