2. For Dongsi House, TV should be located in the four directions of due west, northwest, due north and due south, while for Dongsi House, it should be located in the northeast, due east, southeast and southwest.
3. In addition, the TV background wall should not be facing the window, nor on the wall where the window is opened, because this will not only physically harm people's vision, but also appear empty and loose.
1, live visual images are transmitted instantly by electricity. Similar to movies, TV uses the visual residual effect of human eyes to gradually change the still image frame by frame to form a visually moving image.
2. The transmitter of the TV system converts every tiny part of the scene into electrical signals according to the brightness and chromaticity, and then transmits them in turn.
3. At the receiving end, the brightness and chromaticity of each tiny part are displayed according to the corresponding geometric position to reproduce the whole original image. A generic term for "TV signal receiver".
The device for receiving TV broadcast is composed of complex electronic circuits, speakers, fluorescent screens, etc. Its function is to receive all TV signals transmitted by TV stations through antennas, and then separate video signals and audio signals through electronic circuits, and restore them to images and sounds through fluorescent screens and speakers respectively.
There are black and white TV sets and color TV sets. Color TV sets also have the function of restoring colors, which is different from the color uniqueness of black and white TV sets.