The theory of wireless transmission started way back on 1887 by a German Physicist by the name of Heinrich Hertz.
His work has been continued by other famous physicist until in the year 1895. Guglielmo Marconi, an Italian Inventor was able to develop a radio system that finally achieved long distance wireless transmission.
The demonstration has been conducted across the Atlantic Ocean in 1901 and it’s a great success.
After Guglielmo’s success with his long-distance wireless communication radio system, it has been immediately followed with more improvement through the use of the vacuum tube.
After Guglielmo’s success with his long-distance wireless communication radio system, it has been immediately followed with more improvement through the use of the vacuum tube.
It was in the year 1906 when Dr. Lee De Forest introduces his Audion Tube which can relatively amplify weak electrical signals. To tell you more about Dr. Lee De Forest, he is known as one of the fathers of the “Electronic Age”.
Due to the invention of vacuum tubes, radio broadcasting has been at the verge of rapid progress. In 1920, KDKA station was the first to broadcast regular scheduled programs under the AM radio band.
Due to the invention of vacuum tubes, radio broadcasting has been at the verge of rapid progress. In 1920, KDKA station was the first to broadcast regular scheduled programs under the AM radio band.
As for the FM, it caters for sound programs which started in the year 1939. It’s only in the year 1961 when Stereo broadcasting on FM radio has started.
Television broadcasting has been introduced in July 1941 but it only hits its popularity in the beginning of 1945. Colored-TV was adopted in 1953 up to this very current date.
Going back about the Vacuum Tube, another invention has been discovered in 1948 at Bell Telephone Laboratories. It’s all about transistors which exactly have the same function as the tube but it works by controlling the electron flow through germanium and silicon.
There actually more advantage of using a transistor over the vacuum tube. Some of these advantages are its smaller size and efficiency.
Television broadcasting has been introduced in July 1941 but it only hits its popularity in the beginning of 1945. Colored-TV was adopted in 1953 up to this very current date.
Going back about the Vacuum Tube, another invention has been discovered in 1948 at Bell Telephone Laboratories. It’s all about transistors which exactly have the same function as the tube but it works by controlling the electron flow through germanium and silicon.
There actually more advantage of using a transistor over the vacuum tube. Some of these advantages are its smaller size and efficiency.
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