the history of radio

The radio is a technology that transmits data to a remote point where a receiver detects the simple without using wire. Radio is seen as AM or FM stations in terms of common glossary. In fact, radio waves are also used for receiving and sending data as the wave of satellite broadcasts, Bluetooth devices and wireless networks.
The history of radio was in mid-1800. This was the theory related to electricity and magnetism. Telegraph was the first available technology developed from this discovery even if it requires cables.
James Maxwell had developed his own theories related to electromagnetism in 1865. This led to the first true wireless experience. Many philosophers such as Thomas Edison, Henry Mahlon Loomis and William Ward patented methods of sending and receiving system of wireless telegraphy, but a system of work has never been demonstrated by them.
In 1884, Temistocle Calzecchi-Onesti has invented a device which was subsequently refined. Edouard Branly coherer later named it in 1886. It was a glass tube filled with metal filings related to the current electricity production in a click of a pollster at the reception. The coherer has become the enabling technology that allows radio signals to be received soon.
In 1887, Heinrich Hertz was the first person who has perfected a system that allowed him to experiment with sending wireless signals to a wireless receiver. He was honored in 1933. In 1892, an immigrant Serbo-Croatian in the United States, Nikola Tesla demonstrated the first transmitter and receiver is complete and successfully became the first to invent the radio. Unfortunately there was a fire in his laboratory at 1895 and it could not demonstrate his radio. However in 1898, Tesla demonstrated the first radio and later filed patents for radio in the early 1900s.
An Italian, Guglielmo Marconi was fascinated by the idea of wirelessly transmitting a telegraph signal. In 1894, he succeeded in inventing a spark transmitter with an antenna. Unfortunately, the Italian Postal Service, which controlled the telegraph services were not interested in his experience. He moved to England in 1896 where he has successfully demonstrated its technology at the Office in English Post, who immediately recognized his services. Queen Victoria was also impressed by his invention. Marconi has been linked to the British nobility who were investors in his company and powerful in the emerging markets of the United States.
In 1900, another American Reginald Fessenden demonstrated new technology that was used by the meteorological service to send information to ships at sea, he invented the detector strips him to develop the amplitude modulation (AM).
The 1920s were the years of birth true of modern radio and almost all the houses belonging to a radio. Television has begun to catch up with the 1960s and has been a preferred means of entertainment for Americans. However strongly held radio in the car and 1990, many Americans have listened to the radio in their car or at work. Wireless broadcast traffic reports, music and news radio receivers still prevails despite the arrival of the Internet and satellite radio.