Jump to content

File:The Marconi Company second antenna system at Poldhu, Cornwall.jpg

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

The_Marconi_Company_second_antenna_system_at_Poldhu,_Cornwall.jpg (683 × 529 pixels, file size: 83 KB, MIME type: image/jpeg)

Summary

Description
English: A rare picture of Guglielmo Marconi's Poldhu, Cornwall transmitting station showing the actual antenna used in the first historic transatlantic radio transmission on 12 December 1901. Marconi had originally constructed a large aerial consisting of 400 wires in an inverted cone shape, supported by a ring of twenty 160 foot wooden poles. This antenna collapsed in a storm 17 September 1901, and Marconi hastily erected the temporary antenna shown here, consisting of 50 wires in a fan shape, supported by a cable strung between two 160 foot poles, which was used in the experiment.

Belrose contends this image is actually retouched, created from an earlier photo (The Marconi Company first antenna system at Poldhu) taken of the larger circular antenna by erasing all but two of the poles of the previous antenna and adding lines representing the fan shaped wire elements. There are no other images of the actual antenna used in the transatlantic experiment, as Marconi quickly replaced this temporary antenna with a more sturdy permanent antenna in the form of a 400-wire inverted pyramid supported by four wooden lattice masts.
Date
Source Archive of Marconi Corporation, PLC
Author Unknown authorUnknown author

Licensing

This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
Public domain
This image (or other media file) is in the public domain because its copyright has expired and its author is anonymous.
This applies to the European Union and those countries with a copyright term of 70 years after the work was made available to the public and the author never disclosed their identity.
Important: Always mention where the image comes from, as far as possible, and make sure the author never claimed authorship.
Note: In Germany and possibly other countries, certain anonymous works published before July 1, 1995 are copyrighted until 70 years after the death of the author. See Übergangsrecht. Please use this template only if the author never claimed authorship or their authorship never became public in any other way. If the work is anonymous or pseudonymous (e.g., published only under a corporate or organization's name), use this template for images published more than 70 years ago. For a work made available to the public in the United Kingdom, please use Template:PD-UK-unknown instead.
 		Flag of Europe

This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.

Note: This tag applies to scans and photocopies only. For photographs of public domain originals taken from afar, {{PD-Art}} may be applicable. See Commons:When to use the PD-Art tag.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current20:09, 5 April 2016Thumbnail for version as of 20:09, 5 April 2016683 × 529 (83 KB)Wdwd== {{int:filedesc}} == {{Information |Description={{en|The Marconi Company second antenna system at Poldhu, Cornwall}} |Source=Archive of Marconi Corporation, PLC |Date=1901 |Author={{unknown|author}} }} == {{int:license-header}} == {{PD-scan|Anonymou...

The following 2 pages use this file:

Global file usage

The following other wikis use this file:

Retrieved from "https://en.wikipedia.org/wiki/File:The_Marconi_Company_second_antenna_system_at_Poldhu,_Cornwall.jpg"