Who Invented Radio?

[LouisFerdinand]

Who really invented the Radio?

[Profileid]

Tesla was American

[MinervaItalica]

Marconi.

[Amor Vincit Omnia]

Many people were involved in the invention of radio as we know it today

Experimental work on the connection between electricity and magnetism began around 1820 with the work of Hans Christian Ørsted, and continued with the work of André-Marie Ampère, Joseph Henry, and Michael Faraday. These investigations culminated in a theory of electromagnetism developed by James Clerk Maxwell, which predicted the existence of electromagnetic waves.

Maxwell published A Treatise on Electricity and Magnetism in 1873, stimulating many people to experiment with wireless communication. Others experimented without the benefit of his theories. It is considered likely that the first intentional transmission of a signal by means of electromagnetic waves was performed by David Edward Hughes around 1880, although this was considered to be induction at the time. The first systematic and unequivocal transmission of EM waves was performed by Heinrich Rudolf Hertz and described in papers published in 1887 and 1890. Hertz famously considered these results as being of little practical value.

After Hertz's work many people were involved in further development of the electronic components and methods to improve the transmission and detection of electromagnetic waves. Around the turn of the 20th century, Guglielmo Marconi developed the first apparatus for long distance radio communication.[1] On 23 December 1900, the Canadian inventor Reginald A. Fessenden became the first person to send audio (wireless telephony) by means of electromagnetic waves, successfully transmitting over a distance of about 1.6 kilometers, and six years later on Christmas Eve 1906 he became the first person to make a public radio broadcast.[2][3]

By 1910 these various wireless systems had come to be referred to by the common name "radio".

most important :
David Edward Hughes
Branly
Tesla
Landell de Moura
Lodge
J.C.Bose
Popov
Cervera
Marconi
Ferdinand Braun's
John Stone Stone
De Forest,
Fleming,
Fessenden

https://en.wikipedia.org/wiki/Invention_of_radio

https://en.wikipedia.org/wiki/Timeline_of_radio

about tesla:
1893: Nikola Tesla delivers a lecture "On Light and other High Frequency Phenomena" before the Franklin Institute in Philadelphia and the National Electric Light Association St Louis. Tesla did not think air-born radio waves existed[22] but saw wireless and electromagnetic phenomenon as a promising wireless lighting and power distribution system with communication as a side aspect.[23]

1899: Tesla experiments with wireless power in Colorado Springs. He listens to static from thunderstorms trying to determine values for what he believes is a native electrical charge and frequency of the Earth. Using sensitive electromagnetic receivers[30] he picks up repeating signals he thinks may be from beings on another planet. An alternative explanation is that Tesla may have heard Marconi's wireless telegraphy demonstrations in Europe.

July 1901: Tesla begins construction of his Wardenclyffe Tower wireless transmission facility. The project runs out of funding by 1905 and is never completed.


about marconi

1895: Marconi pursues the idea of building a wireless telegraphy system using Hertzian waves (radio). This is considered to be the first development of a radio system specifically for communication.[26]

1896: Marconi was awarded a patent for radio with British Patent 12039, Improvements in Transmitting Electrical Impulses and Signals and in Apparatus There-for. This is the initial patent for radio based wireless telegraphy.

1897: Marconi establishes a radio station on the Isle of Wight, England. In the U.S. during 1897, Tesla applies for several wireless power patents. Those two patents were issued in early 1900.

1898: Marconi opened the first radio factory, on Hall Street, Chelmsford, England, employing around 50 people.

December 1901: Marconi claims to have received in St. John's, Newfoundland a radio signal transmitted from Poldhu in Cornwall (UK)

February 1902: Marconi starts conducting more organized and documented tests sailing on board the SS Philadelphia west from Great Britain recording signals sent daily from the Poldhu station showing reception up to 2,100 miles (3,400 km).

December 1902: the Marconi station in Glace Bay, Nova Scotia, Canada transmits the first signal from North America back to Great Britain.

1904: The U.S. Patent Office reversed its decision, awarding Marconi a patent for the invention of radio.

[LouisFerdinand]

Tesla vs. Marconi