Television Write for Us
Television extends approximately, from the end of the 19th century to 1935 . At first two models appeared: the mechanical television devised by John Baird and the electronic one created by the Russian-American researcher Vladimir Zwuorikyn .
Although mechanics was the first to start broadcasting, electronics soon prevailed, mainly due to its technical superiority. In a short time, television went from being a laboratory invention to becoming a medium available to the public, thus heralding its subsequent enormous worldwide impact.
The development, although it was interrupted by the outbreak of World War I , was resumed as soon as the war ended, allowing itself to take its place among the most widespread media such as the press or the radio, which already had their own story at that time. Once the stage of its birth and consolidation has been overcome, the era of color will come and, after it, the internationalization of the medium and its contents, which prompted the launch of the first communication satellites and other technologies such as cable distribution.
Types of television
Television until recent times, the beginning of the 21st century, was completely analog and its way of attaining viewers was through the air with radio waves in the VHF and UHF bands . Cable networks soon came out, distributing channels around cities. This distribution also carried out with an analog signal, cable networks can have an allocated band, more than anything to be able to tune the channels that arrive over the air together with those that arrive by cable.
Cable television arises from the need to transmit television and radio signals , of a diverse nature, to the subscribers’ homes, without the need for them to have different receiving equipment, players and, above all, antennas.
Stereoscopic vision or stereovision is a technique already known and used in photography at the beginning of the 20th century. At the end of the same century, 3D cinema, in three dimensions, was already common and commercialized. At the end of the first era of the 21st century, the first commercial 3D television systems began to seen, based on the capture, transmission and representation of two similar images displaced one with respect to the other and polarized.
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