How long did it take to invent the radio?

Answer 1

In 1893, in St. Louis, Missouri, Nikola Tesla made devices for his experiments with electricity. Addressing the Franklin Institute in Philadelphia and the National Electric Light Association, he described and demonstrated in detail the principles of his wireless work. The descriptions contained all the elements that were later incorporated into radio systems before the development of the vacuum tube. He initially experimented with magnetic receivers, unlike the coherers (detecting devices consisting of tubes filled with iron filings which had been invented by Temistocle Calzecchi-Onesti at Fermo in Italy in 1884, used by Guglielmo Marconi and other early experimenters. The first radio couldn't transmit sound or speech and was called the "wireless telegraph." The first public demonstration of wireless telegraphy took place in the lecture theater of the Oxford University Museum of Natural History on August 14, 1894, carried out by Professor Oliver Lodge and Alexander Muirhead. During the demonstration a radio signal was sent from the neighboring Clarendon laboratory building, and received by apparatus in the lecture theater. In 1895 Alexander Stepanovich Popov built his first radio receiver, which contained a coherer. Further refined as a lightning detector, it was presented to the Russian Physical and Chemical Society on May 7, 1895. A depiction of Popov's lightning detector was printed in the Journal of the Russian Physical and Chemical Society the same year. Popov's receiver was created on the improved basis of Lodge's receiver, and originally intended for reproduction of its experiments In 1896, Marconi was awarded the British patent 12039, Improvements in transmitting electrical impulses and signals and in apparatus there-for, for radio. In 1897 he established the world's first radio station on the Isle of Wight, England. Marconi opened the world's first "wireless" factory in Hall Street, Chelmsford, England in 1898, employing around 50 people. the radio is used alot now.

Answer 2

In 1887, Dr. Heinrich Hertz demonstrated that radio waves could be generated

in the laboratory, and detected on the other side of the room without any wires

in between. That was 127 years ago. The only thing between that and today's

Blue Bag Billboard Baby in orbit on the Top Pop Rocker comin down atcha from

the satellite has been some engineering technology.

Answer 3

In the United States ( different countries have different rules and policies_ since the Roberts Bill defined a difference between commercial operators ( such as those on Ships) and amateurs- around l9ll. at the time, all TRAFFIC was in Internaitonal Morse Code, which is no longer the case.

Answer 4

years. Gugliemo Marconi the inventor spent years in his fathers attic trying to make it and in 1895 he succeeded

Answer 5

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