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Anonymous users2024-02-07Yes, it's usually about two or three seconds, but depending on the distance of fast propagation, it is generally not too bad.
Resolution is the precision of the screen image, which refers to the number of pixels that the display can display. Since the dots, lines, and surfaces on the screen are made up of pixels, the more pixels a display can display, the finer the picture will be, and the more information can be displayed in the same screen area, so resolution is one of the most important performance indicators. Think of the image as a large chessboard, and the resolution is expressed as the number of intersections of all the meridian and latitude lines.
For a screen with a resolution of 1024 768, that is, each horizontal line contains 1024 pixels, with a total of 768 lines, that is, the number of scanned columns is 1024 columns, and the number of rows is 768.
If you understand the concept of "resolution", I believe you will be able to understand the sentence For example, if the resolution is 1 meter, the thing with a length and width of 1 meter is displayed as a point.
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Anonymous users2024-02-06Most of them are transmitted via satellite or microwave.
Theoretically, there is no delay in transmission (electromagnetic waves.
speed and speed are the same as the speed of light).
However, TV stations will have a certain delay (ranging from a few seconds to a few minutes, especially our TV stations) due to the need for broadcast security
At present, TVs can achieve the highest HD level.
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Anonymous users2024-02-05Yes, of course. In the live broadcast through the camera, then on the telecom transmitter and then on the satellite reception, and then on the ground receiver. The velocity of electromagnetic waves is 3 10 8 meters per second, which is about the same as light.
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Anonymous users2024-02-04It must be how to broadcast live.
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Anonymous users2024-02-03Yes, of course. Live broadcast via camera.
Then spread in the telecommunications transmitter Tong Xiancha.
and then to satellite reception.
And then spread it out.
and then to the ground receiving dispenser.
The velocity of electromagnetic waves is 3, 10, 8 meters per second.
It's about the same as light.
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Anonymous users2024-02-02The satellite takes the earth as the center of the circle, moves in the same direction and speed with the earth, and there is no change in position between the satellite and the earth
Therefore, choose B
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Anonymous users2024-02-01(1) Three coordinates are needed to determine a point in space, so at least three satellites are needed to determine the location of a point on the earth; By deploying three communication satellites in geosynchronous orbit, global communication can be achieved except for the two poles;
2) emit a signal-carrying electromagnetic wave from the ground station, and after this electromagnetic wave is received and processed by the communication antenna, it is sent to the ground station by the satellite, which takes a certain amount of time, so there will be a signal delay;
The signal is delayed at least t=s v2 m
8 m s so the answer: 3; Electromagnetic wave;
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Anonymous users2024-01-31Fengyun Football Channel is a digital TV under **TV station,You can go to the local cable TV to ask for specific**,Open it and you can broadcast it! Logging on to China Network TV on the computer can also be ** Fengyun Football Program La Liga CCTV5, local station live broadcast, Real Madrid and Barcelona matches, alternately live broadcast Serie A CCTV5 every week, Guangdong Sports, European Football Live Bundesliga was bought out by CCTV5.
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Anonymous users2024-01-30Pay the money at the ** TV station branches in various places.
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Anonymous users2024-01-29Buy DM500 and decrypt it using a network share!
First draw a newspaper header at the top, a little boy playing football below, a circle in front of him, a lawn under his feet, a football at the bottom left, then a background border and a small border, add some plants, then color, and finally draw a text column, a simple hand-copied newspaper is drawn. >>>More
Hello, I'm a college football major, maybe mine isn't very accurate, but I'll tell you some of my own tips, I hope it will help you——— swing your feet forward and up, hit the ball with the instep, fix the ankle joint when hitting the ball, hit the lower part of the ball. You can hit the ball with both feet alternately, or you can support the ball with one foot and hit the ball continuously with the other foot. Hit the ball with even force so that the ball is always controlled around the body. >>>More
Football is highly confrontational, and players use various actions allowed by the rules in the game, including running, stopping, turning, falling to the ground, jumping, colliding, etc., to compete fiercely with their opponents. The long competition time, large spectators, and large competition venues are unattainable by any other sport. A traditional soccer ball consists of 20 6-sided and 12 5-sided pieces, a total of 32 skins. >>>More
Oh, 5 yuan per month! Send a yuan, if you want to refund, you send a lot of messages, so you can figure out that the original is to change direction and ask for your money. >>>More
How could you ask such a question!! Dizzy.
However, basketball pays more attention to the flexibility of the body, football pays attention to the flexibility of the legs, and the exercises are more convenient, I think it is difficult to achieve anything in football, it is difficult to make great progress in playing for a year or two, and basketball can be seen in 2 months, but you have to have enough physical fitness, not too short, you can jump and jump, that is: basketball is easier. >>>More