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This tag can be used only when the author cannot be ascertained by reasonable enquiry. If you wish to rely on it, please specify in the image description the research you have carried out to find who the author was. The above is all subject to any overriding
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An artistic work other than a photograph (e.g. a painting), or a literary work, which was made available to the public (e.g. by publication or display at an exhibition) more than 70 years ago (before 1 January
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A photograph, which has never previously been made available to the public (e.g. by publication or display at an exhibition) and which was taken more than 70 years ago (before 1 January 1954); or
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Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the
Commons. If the work is not a U.S. work, the file
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A photograph, which was made available to the public (e.g. by publication or display at an exhibition) more than 70 years ago (before 1 January 1954); or
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Unpublished anonymous paintings remain in copyright until at least 1 January 2040. This tag does not apply to engravings or musical works.
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made of two brass rods with a spark gap between them, which transmits pulses of radio waves spelling out text messages in
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which rings a bell when it receives the dots and dashes of Morse code The bell and batteries are in the box.
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The following pages on the
English Knowledge (XXG) use this file (pages on other projects are not listed):
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which may exist. In practice, publication right will often override the first of the bullet points listed.
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magazine, George Newnes, Ltd., London, Vol. 13, No. 75, March 1897, p. 275
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400://commons.wikimedia.org/File:Marconi_and_his_wireless_apparatus_1897.jpg
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Publicity photo in a magazine of
British-Italian radio entrepreneur
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Click on a date/time to view the file as it appeared at that time.
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transmitter and receiver, invented around 1895. On the left is his
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Guglielmo
Marconi with his first radio transmitter and receiver
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and cannot be ascertained by reasonable enquiry, is in the
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This UK artistic or literary work, of which the author is
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indicating the copyright status in the source country.
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Utilisateur:SophieImbeault/Brouillon/Radio québécoise
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The New
Telegraphy: An interview with Signor Marconi
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Commons is a freely licensed media file repository.
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562:1 March 1897
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174:1 March 1897
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106:You can help
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685:(109 KB)
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
