The system for transmitting images have been commercially available since the 1930s and has as a medium been widely disseminated worldwide. Other complementary technologies such as VHS, DVD and blu-ray disc have been introduced over the years. A TV covers set is a video monitor built with a TV tuner.
The images are built up as dots on vandrete stresses, but it happens so fast - 50 times per second, for the newer televisions - 100 times per second - that humans can not even comprehend it. All you see are pictures that move. There are several main systems, including DVB - used in most of Europe; ATSC - most of North America and Latin America, USA; Analog TV - three different color television standards in various parts of the world.
In addition to PAL (short for Phase Alternating Line) is used Algeria, Brazil, Europe (except France), Africa and China; NTSC (short for National Television Systems Committee) is used in America (except Brazil), Japan, Korea and Taiwan. SECAM (Sequential Color with Memory) used in France and many Eastern European countries.
The flat-screen TVs are sets where the image is reproduced with LCD or plasma technology in place of CRTs. New technologies, such as OLED promise to create even thinner displays. Although projection technology can be used to render the image, either as front projection where the image is projected on a special projection screen, or other any surface, or rear projection, where the projector and screen are often built into a cabinet.
Another system uses a rotating mirror with multiple pages (four, six, eight and so on) and a number of angled mirrors behind. This system can display at very high resolution images of several hundred lines. In fact, laser printers use a similar system with a versatile rotating mirror.
Color televisions were the next big thing. In the early 1900s, there were many who tried to invent a system where the TV can show colors, but the technology was just not there yet. It was in 1954 in America, when the first color system went into production. It cost $ 1000 and had a 12 inch screen. It was almost three times as expensive as a black and white television, which cost about $ 300 and had a 21 inch screen.
The first high-resolution broadcasts took place in Germany in March 1935, but were only available in 22 public televisions. The system had 180 lines, which resulted in a very high resolution image compared with Britain's 30 line system. One of the initial major broadcasting was the Olympic Games in Berlin in 1936.
TV changed the way war was perceived, in the sense that it showed some gruesome images that some parties would rather have kept secret. Michael J. Arlen, author of Living Room War, described the Vietnam War as the first "family room war" because televisions made the Vietnam war accessible to the ordinary citizen.
The images are built up as dots on vandrete stresses, but it happens so fast - 50 times per second, for the newer televisions - 100 times per second - that humans can not even comprehend it. All you see are pictures that move. There are several main systems, including DVB - used in most of Europe; ATSC - most of North America and Latin America, USA; Analog TV - three different color television standards in various parts of the world.
In addition to PAL (short for Phase Alternating Line) is used Algeria, Brazil, Europe (except France), Africa and China; NTSC (short for National Television Systems Committee) is used in America (except Brazil), Japan, Korea and Taiwan. SECAM (Sequential Color with Memory) used in France and many Eastern European countries.
The flat-screen TVs are sets where the image is reproduced with LCD or plasma technology in place of CRTs. New technologies, such as OLED promise to create even thinner displays. Although projection technology can be used to render the image, either as front projection where the image is projected on a special projection screen, or other any surface, or rear projection, where the projector and screen are often built into a cabinet.
Another system uses a rotating mirror with multiple pages (four, six, eight and so on) and a number of angled mirrors behind. This system can display at very high resolution images of several hundred lines. In fact, laser printers use a similar system with a versatile rotating mirror.
Color televisions were the next big thing. In the early 1900s, there were many who tried to invent a system where the TV can show colors, but the technology was just not there yet. It was in 1954 in America, when the first color system went into production. It cost $ 1000 and had a 12 inch screen. It was almost three times as expensive as a black and white television, which cost about $ 300 and had a 21 inch screen.
The first high-resolution broadcasts took place in Germany in March 1935, but were only available in 22 public televisions. The system had 180 lines, which resulted in a very high resolution image compared with Britain's 30 line system. One of the initial major broadcasting was the Olympic Games in Berlin in 1936.
TV changed the way war was perceived, in the sense that it showed some gruesome images that some parties would rather have kept secret. Michael J. Arlen, author of Living Room War, described the Vietnam War as the first "family room war" because televisions made the Vietnam war accessible to the ordinary citizen.
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