File:Construction-pruss-opt-tele.png

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Summary

Description Construction of prussian optical telegraph
Date circa 1835
date QS:P,+1835-00-00T00:00:00Z/9,P1480,Q5727902
Source Hermann Kellenbenz: Die historische Bedeutung der Telegraphenstation in Köln-Flittard. In: Die Telegraphenstation Köln-Flittard. Eine kleine Geschichte der Nachrichtentechnik. Köln, 1973
Author Unknown authorUnknown author

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Captions

Schematic of a Prussian optical telegraph (or semaphore) tower, c. 1835

Items portrayed in this file

depicts

media type

image/png

checksum

a19a505786a02d3bd798b360384c6485e3d7bd67

determination method: SHA-1

data size

58,387 byte

height

1,021 pixel

width

429 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current19:13, 7 January 2007Thumbnail for version as of 19:13, 7 January 2007429 × 1,021 (57 KB)Superbass
18:33, 7 January 2007Thumbnail for version as of 18:33, 7 January 2007432 × 1,024 (99 KB)Superbass
22:43, 4 January 2007Thumbnail for version as of 22:43, 4 January 2007138 × 640 (15 KB)Superbass{{Information |Description=Construction plan of prussian optical telegraph |Source=Dietmar Herbarth: Die Entwicklung der optischen Telegrafie in Preussen, Köln, 1978, |Date=before 1832 |Author= unknown |Permission= |other_versions= }}
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