Como funciona a televisão?

a televisão?

[{ "selector": ".stikj-a", "duration": "500ms", "fill": "forwards", "delay": "500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }, { "selector": ".ftrnd-a", "duration": "500ms", "fill": "forwards", "delay": "500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }, { "selector": ".ykuwu-a", "duration": "1000ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "transform": "translateY(-91.00000000000001px)", "opacity": 1}, {"offset": 1, "transform": "translateY(0)", "opacity": 1} ] }]

Para que a nossa TV possa
ligar, é necessário que um
conjunto de informações
sejam captadas para formar
as imagens e os sons

[{ "selector": ".hnfdw-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "transform": "translateY(calc(600px - 359px))", "opacity": 1}, {"offset": 1, "transform": "translateY(0)", "opacity": 1} ] }, { "selector": ".tupxy-a", "duration": "500ms", "fill": "forwards", "delay": "750ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }, { "selector": ".dugts-a", "duration": "500ms", "fill": "forwards", "delay": "500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }, { "selector": ".hqyuq-a", "duration": "500ms", "fill": "forwards", "delay": "500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }]

Ondas eletromagnéticas

[{ "selector": ".ldmnw-a", "duration": "1000ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - -128px))", "opacity": 1}, {"offset": 1, "transform": "translateX(0)", "opacity": 1} ] }]

Toda televisão precisa captar a informação, que vem em ondas eletromagnéticas parecidas com ondas de rádio. É por essas ondas que as imagens e sons chegam até a TV. [{ "selector": ".gwkdk-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }, { "selector": ".yktim-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }]

Aparelhos modernos

[{ "selector": ".pbodc-a", "duration": "1000ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - -128px))", "opacity": 1}, {"offset": 1, "transform": "translateX(0)", "opacity": 1} ] }]

Os aparelhos mais modernos têm um receptor interno para as ondas, que também podem ser captadas por antenas. Outro método é a TV a cabo, em que os sinais são transmitidos por meio de redes de cabo. [{ "selector": ".wzmgb-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }, { "selector": ".ibjlr-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }]

Transformando em imagem

[{ "selector": ".zkegj-a", "duration": "1000ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - -128px))", "opacity": 1}, {"offset": 1, "transform": "translateX(0)", "opacity": 1} ] }]

É hora de transformar tudo em imagem. Para isso, a última geração têm algumas camadas, como: vedação, eletrodos e conjuntos de LED responsáveis por gerar a luz que fará o sinal captado virar imagem. [{ "selector": ".qthpn-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }, { "selector": ".rsjpt-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }]

Pixel

[{ "selector": ".zkvxb-a", "duration": "1000ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - -128px))", "opacity": 1}, {"offset": 1, "transform": "translateX(0)", "opacity": 1} ] }]

Cada pontinho da imagem que você enxerga na TV se chama pixel e é formado por 3 cores básicas: verde, vermelho e azul. Nas TVs de LED, para cada pixel existe um conjunto com LED azul, verde e vermelho. [{ "selector": ".lwugu-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }, { "selector": ".oqkhs-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }]

Produto final

[{ "selector": ".escgv-a", "duration": "1000ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "transform": "translateX(calc(360px - -128px))", "opacity": 1}, {"offset": 1, "transform": "translateX(0)", "opacity": 1} ] }]

Ao receber a energia elétrica e o sinal de TV, cada conjunto de LED é iluminado e gera os pixels. Assim, todos os pixels juntos formam a imagem na tela e você assiste a seu programa preferido! [{ "selector": ".xgxui-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }, { "selector": ".qnohq-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }]

Texto: Maria Carolina Cristianini
Revisão: Daniela Bazi
Edição: Vitória Gomes
Créditos: Pixabay

[{ "selector": ".cmska-a", "duration": "500ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "transform": "translateY(calc(600px - 327px))", "opacity": 1}, {"offset": 1, "transform": "translateY(0)", "opacity": 1} ] }, { "selector": ".xilsi-a", "duration": "1000ms", "fill": "forwards", "delay": "0ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": 1} ] }] CLIQUE AQUI