Датотека:EB1911 Telegraph - umbrella antenna.jpg

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Izvor: Викизворник

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Opis
English: In practical wireless telegraphy the antenna is generally a collection of wires in fan shape upheld from one or more masts or wooden towers. Sometimes the prolongations of these wires are carried horizontally or dipped down so as to form an umbrella antenna (see figure).
Datum published 1911
Izvor Encyclopædia Britannica (11th ed.), v. 26, 1911, “Telegraph,” p. 534, Fig. 42.
Autor John Ambrose Fleming (section author)
Dozvola
(Ponovno korišćenje ove datoteke)
Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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trenutna17:57, 16. mart 2016.Minijatura za verziju na dan 17:57, 16. mart 2016.806 × 493 (51 kB)Library Guy{{Information |Description ={{en|1=In practical wireless telegraphy the antenna is generally a collection of wires in fan shape upheld from one or more masts or wooden towers. Sometimes the prolongations of these wires are carried horizontally or di...

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