who discovered the radio?

Answer 1

Marconi discovered radio.

Answer 2

Nicola Tesla invented radio. Marconi made radio the way Milton Berle made tv.
Marconi's radios were identical in design as radios invented and already patented by Tesla. But while Marconi used his inventions for communication Tesla intended to use his invention to transport electricity through the air at great distance. Tesla had alot of wild experiments and he was ahead of his time (wireless electricity is only becoming a reality now) but he wasn´t as much a public figure as Marconi. Which is why there is a common misconception that he invented radio while the US patent office will tell you it was infact Tesla.

Tesla also had problems with other ideas being stolen and discredited. Edison had, for instance, built this huge industry around direct current and when Tesla invented the alternating current Edison actually electrocuted an elephant to death just to show how dangerous ac was! Fortunately for us ac became the prime powersource and made it possible for us to utilize hydroelectricity.

Answer 3

Marconi discovered the radio

Answer 4

Marconi discovered the Radio.

Answer 5

In 1890 Professor Richard Threlfall of Sydney, Australia at a talk given at a meeting of the Australian and New Zealand Association for the Advancement of Science predicted that the then recent discoveries and measurements by Heinrich Hertz would lead to the development of a new form of wireless telegraphy. This is probably the first public acknowledgment that such a thing was practical.

Prof. Threlfall probably did nothing with the idea, he was busy trying to prevent spontaneous combustion in Australian coal exports to Chile apart from teaching physics and chemical engineering.

Within two years several people were working on the practicalities. That included the British Royal Navy who only managed to obtain reception over a hundred or so metres.

Marconi's main early contribution was a refinement of the coherer detector to "exquisite" sensitivity. The coherer had been invented in France by Edouard Branly in 1890 following work that went back to the 1850s.

No one person discovered or "invented" radio or even spark wireless telegraphy, even in the earliest days. It was the culmination of improvements in several fields that led to it becoming a working system by about 1897.

There has been a lot of wild talk about Nikola Tesla "inventing" wireless telegraphy and Marconi somehow "stealing" his ideas. This is nonsense. How a 22 year old living near Bologna in 1894 could be aware of all the details of Tesla's simultaneous work is unknown to me. It is only repeated by those who have no appreciation of how invention and development works and how the patent system has operated since at least the 18th century. In fact Marconi read as much as he could on the subject, including the papers published by Hertz. Marconi's transmitters were based on those of Hertz, just like everyone else's.

When Marconi arrived in England in 1895 he applied for a British patent, only to be told that there were already patents on the system as a whole. So his first patent was entitled "Improvements in Wireless Telegraphy."

His improvements in fact were his "exquisitely sensitive" coherer, the idea of grounding one side of the transmitter spark gap and finding that transmission increased not with the area of the plates that Hertz used, but the length of the wire leading to the plate. That culminated years later in his invention of the quarter wave vertical antenna, which is still in use today.

I have read a two histories of wireless telegraphy including the one in my source below and a number of articles by historians in serious magazines. Tesla is scarcely mentioned, if at all. I don't think Fahie mentioned him at all, and Fahie wrote in 1899.

There is also a clash of patent systems here. The USA is virtually the only country where anybody gives a tinker's curse about who is the first to invent. Everywhere else it is who is the first to get a patent application in.

Answer 6

First of all I think you mean who invented the radio...
Ok, there is no easy answer since it will vary who you ask - Americans think it's Marconi (that has been disproven - Marconi commecialized radio - but didn't invent it).
Serbians will say it's Tesla, Russian will say it's Popov, Swedes, Brazilians, Germans and others will claim it as their inventions, in reality it all of those people innovated "the wireless telegraph"... Eventually Marconi saw commercial potential in their inventions and commercialized it.

Answer 7

Marconi discovered radio.

Answer 8

The inventor is the subject of some debate.

Marconi is generally attributed to have developed the first practical device usable for communication. Another recognised person for same is Hertz.

For a detailed info on invention of Radio pls visit :- http://inventors.about.com/od/rstartinventions/a/radio.htm

I hope this shall give you enough info..

Chao

Vik

Answer 9

Invention

Further information: Invention of radio

Although radio invention was long attributed to Guglielmo Marconi, today we recognize that the inventor of the radio is Serbian-American genius Nikola Tesla. However, the identity of the original inventor of radio, at the time called wireless telegraphy, is contentious. Development from a laboratory demonstration to commercial utility spanned several decades and required the efforts of many practitioners. The controversy over who invented the radio, with the benefit of hindsight, can be broken down as follows:

* In 1878, David E. Hughes transmitted Morse code by radio at and below the Super low frequency range (via a clockwork transmitter).

* In 1888, Heinrich Hertz produced and measured the Ultra High Frequency range (via a sparkgap transmitter).

* In 1891, Nikola Tesla began wireless research. He developed means to reliably produce radio frequencies, publicly demonstrated the principles of radio, and transmitted long-distance signals.

* Between 1893 and 1894, Roberto Landell de Moura, a Brazilian priest and scientist, conducted experiments. He did not publicise his achievement until 1900 but later obtained Brazilian patent.

* In 1894 in Kolkata (Calcutta), Sir Jagdish Chandra Bose (J. C. Bose) invented the Mercury Coherer (together with the telephone receiver).

* Alexander Stepanovich Popov, in 1894, built his first radio receiver, which contained a coherer but actually coherer was first demonstrated by J.C. Bose. Popov demonstrated the coherer, further refined as a lightning detector, to the Russian Physical and Chemical Society on May 7, 1895.

* In 1894, Guglielmo Marconi read about Hertz's and Tesla's work on wireless telegraphy, and began his own experiments.

* By 1897 Nikola Tesla had successfully conducted experiments, and obtained a U.S. patent for his invention of "wireless transmission of data" (i.e. radio) in 1897 and 1900.[1]

* In December of 1901 Guglielmo Marconi used J.C. Bose's inventions to receive the radio signal in his first transatlantic radio communication over a distance of 2000 miles from Poldhu, UK, to St. Johns, Newfoundland. Marconi was celebrated worldwide for this achievement, but the fact that the radio patent was already registered by Tesla in 1900, as well as the fact the receiver was invented by Bose was not well known. Soon after the patent is given to Marconi. He even received the Nobel Prize.

* In early 1900s Reginald Fessenden [1] and Lee de Forest invented amplitude-modulated (AM) radio, so that more than one station can send signals (as opposed to spark-gap radio, where one transmitter covers the entire bandwidth of the spectrum).

* IN 1935 Edwin H. Armstrong invented frequency-modulated (FM) radio, so that an audio signal can avoid "static," that is, interference from electrical equipment and atmospherics.

* In 1943, the U.S. Supreme Court acknowledged that Marconi's work wasn't original, and the patent ownership is given back to Nikola Tesla. However, Tesla died just a bit before the decision was announced.[2]

Answer 10

It ended up in court and Tesla won.

Marconi worked with a small field EMP.

Tesla worked with RF modulation.

Technically, however, Reginald Fessenden was the first to make practical radio, voice transmissions, music transmissions possible through his development of hyterodyne principals.