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German semaphore home signals, which are totally different in appearance to the British semaphore signal, include one or two white arms with a red outline and a small circular disk at the end of it, and coloured lenses which display the position of the aspect(s) of the signal during nighttime operation and these arms face right of the post.
A semaphore signal on the Atchison, Topeka and Santa Fe Railway in 1943. Semaphore signals were first developed in England in 1841. [2]: 169 Some U.S. railroads began to install them in the early 1860s, and semaphores gradually displaced other types of signals. The Union Switch & Signal company (US&S) introduced an electro-pneumatic design in ...
Diagrams and maps of Murray's U.K. semaphore stations; Chart of Murray's shutter-semaphore code; Photo and diagrams of Popham's U.K. semaphore stations; Map of visual telegraph (semaphore) and electrical telegraph lines in Italy, 1860 (in Italian) Details on the history of the Blanc brothers fraudulant use of the Semophore line
Semaphore (lit. ' apparatus for signalling '; from Ancient Greek σῆμα (sêma) 'mark, sign, token' and Greek -φόρος (-phóros) 'bearer, carrier') [1] is the use of an apparatus to create a visual signal transmitted over distance. [2] [3] A semaphore can be performed with devices including: fire, lights, flags, sunlight, and moving arms.
The distant signal in NSW has a fixed upper green light. Lower Quadrant Semaphore signals use an arm that works in a horizontal position and may be lowered to a 45-degree angle, they can only give two indications. In the horizontal position a red light is displayed, in the lowered position a green light is displayed.
Created Date: 8/30/2012 4:52:52 PM
The Medical Signal Code [13] (incorporated in the International Code of Signals since 1930) is a means of providing assistance when medical personnel are not present. Plain language is generally preferred in such cases (presumably via radiotelephone), but the various codes provide a succinct method of communicating to a doctor the nature of the ...
This diagram uses embedded text that can be easily translated using a text editor. Licensing Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License , Version 1.2 or any later version published by the Free Software Foundation ; with no Invariant Sections, no Front-Cover Texts ...