电视：彩色电视机的简称用电的方法即时传送活动视觉图像。同电影相似，电视运用人眼的视觉残留效应呈现一帧帧渐变的静止图像，形成视觉的活动图像。电视系统的发送端把景物的各个微细部分按亮度和色度转换为电子信号后，先后顺序传送。在接收端按相应的几何位置呈现各微细部分亮度和色度来重现整幅原始图像。
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