Delwedd:Guglielmo Marconi 1901 wireless signal.jpg

Ni chefnogir cynnwys y dudalen mewn ieithoedd eraill.
Oddi ar Wicipedia

Maint llawn ‎((3,000 × 1,849 picsel, maint y ffeil: 1.06 MB, ffurf MIME: image/jpeg))

Daw'r ffeil hon o Comin Wikimedia a gellir ei defnyddio gan brosiectau eraill. Dangosir isod y disgrifiad sydd ar dudalen ddisgrifio'r ffeil yno.

Crynodeb

Disgrifiad
English: Electrical engineer/inventor Guglielmo Marconi with the spark-gap transmitter (right) and coherer receiver (left) he used in some of his first long distance radiotelegraphy transmissions during the 1890s.
Español: El ingeniero eléctrico e inventor Guglielmo Marconi operando un aparato similar al usado por él para transmitir la primera señal no cableada a través del Atlántico.
Dyddiad
Ffynhonnell
This image comes from the Google-hosted LIFE Photo Archive where it is available under the filename 4a204d82f07524bd.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See the copyright section in the template documentation for more information.

Awdur Published on LIFE
Caniatâd
(Ailddefnyddio'r ffeil hon)		 Published anonymously in UK.
Diwygiadau eraill File:Airwaves.jpg

Trwyddedu

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.
Flag of Europe
Flag of Europe
Warning sign
Warning sign
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.
Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

Captions

Add a one-line explanation of what this file represents
Electrical engineer/inventor Guglielmo Marconi with the spark-gap transmitter (right) and coherer receiver (left) he used in some of his first long distance radiotelegraphy transmissions during the 1890s.

Items portrayed in this file

yn portreadu

MIME type Saesneg

image/jpeg

Hanes y ffeil

Cliciwch ar ddyddiad / amser i weld y ffeil fel ag yr oedd bryd hynny.

Dyddiad / AmserBawdlunHyd a lledDefnyddiwrSylw
cyfredol20:33, 13 Ebrill 2019Bawdlun y fersiwn am 20:33, 13 Ebrill 20193,000 × 1,849 (1.06 MB)Alex MicrobeHigher Resolution
20:47, 24 Mai 2009Bawdlun y fersiwn am 20:47, 24 Mai 2009600 × 379 (33 KB)Lobo== Sumario == {{Information |Description={{en|1=Electrical engineer/inventor Guglielmo Marconi operating apparatus similar to that used by him to transmit first wireless signal across Atlantic.}} {{es|1=El ingeniero eléctrico e in

Mae'r 1 tudalennau a ddefnyddir isod yn cysylltu i'r ddelwedd hon:

Defnydd cydwici y ffeil

Mae'r wicis eraill hyn yn defnyddio'r ffeil hon:

Wedi dod o "https://cy.wikipedia.org/wiki/Delwedd:Guglielmo_Marconi_1901_wireless_signal.jpg"