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A brief history of the radio


Added: 28-01-2010
Author: Roberto Sedycias
Category: Radio 		← Back | ↓ Related | Home →


Expectation is that almost every household in America has at least one radio. The discovery of the radio two times depend on previous discoveries: the electromagnet and the Telegraph.

Electromagnet was discovered in 1825. This discovery opens the door for international communication! Five years later, Joseph Henry successfully transmitted diseases through electrical cables now placed in kilometers and caused by an electromagnet to trigger the sound of bells. Thus was born the Telegraph electricity. One of the recognizable names associated with Samuel Morse Telegraph is the more famous series of dots (short sound) and dashes (more sustained sound) which is used to convey the message to the alphabet code (thus known as Morse Code). Telegraph is the only quick means of communication for distance in 1877 and the discovery of the phone.

Batteries are interesting, they are t years? Used by consumers in general, they are small, but packed instrument of power used to produce power for many cameras, alarm clock, radio, and other equipment. What makes this possible electricity production? In the case of the phone and s is the initial design and use, the battery produced an important resource for the electromagnet.

The battery has two ends that one is given a + or positive, and the others - or negative. When the device is switched zinaendeshwa battery, battery produced by electronic, quickly moving from positive and negative sides of the battery. Something needed quickly is against the current electronic or find the battery is completely removed in the short term. To achieve this, often a wire inserted between the positive and negative terminals and cargo, such as radio, build a small magnetic field on the wire. Electromagnetic waves which now has the ability to send voice (speech, music, etc.) such as Visual image to see without being detected by air.

There are some scientists who should be mentioned as an important device known many of us. Mahlon Loomis creates wireless Telegraph. Guglielmo Marconi, has shown the possibility of radio communication. Marconi in 1985, sexually transmitted and received radio signals. Using Morse code, it sends a wireless signal of the first sexually transmitted across the English Channel and on time, he may receive the letter S in Morse who became England and reached Newfoundland which became the beginning of transatlantic radiotelegraphy (1902).

Receive wireless signals to be used as a communication tool for rescue work during the accident or disaster that occurred in the sea. Year 1899 United States Army began using the wireless communication of the original lightship from Fire Island. The U. S. Navy about two years behind the army in the use of wireless telegraphy.

In 1903, President Roosevelt (Theodore) and King Edward VII was delivered through new technology and better. Famous Robert Perry, radiotelegraphy, convey the message that he and discover the Pole.

The first AM radio communications into the world of the early 1900 s. These devices take advantage of some weak waves for communication possible. This is the time when the radio, as we know it today in the radio equipment, he began to be used.

It is believed that the December 23, 1900, Professor Reginald Aubrey Fessenden was the first person to successfully send a human voice and radio waves. In 1915, the first speech delivered at the beginning of the U.S. in New York City and taken to San Francisco. Some later, the infection occurred throughout the Atlantic from Arlington, Virginia, during the Paris Eiffel Tower.

This is really interesting all the scientists and the physics that led to the discovery of radio. Marconi, Alexander Popov, Oliver Lodge, Fessenden and many others, all made important contributions to the discoveries that made the world so different, it is likely that most people will see the fight. Radio era was born.

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