At this moment, the 2018 Russia World Cup is in full swing. Whether you are a football fan without a ball or a football player who doesn't pay much attention to football on weekdays, this World Cup has more or less influenced the topic of almost everyone, and became everyone. The focus of talking online or after a meal. As long as you go online or watch TV, it's hard not to feel the frenetic football atmosphere brought by the World Cup. This World Cup is the 21st event held by the FIFA World Cup and the 5th World Cup after entering the new century. With the development of technology, people's lives are changing with each passing day, and the World Cup is no exception. There are many technological innovations in this year's World Cup in Russia, some about the penalty in the game, and some about the broadcast outside the stadium. Let's take a look at the three latest technologies used in this World Cup - video assistant referee, doorline technology and 4K HDR live broadcast, and their impact. Video Assistant Referee (VAR) When it comes to new technologies and innovation on the field, you must first mention the "VAR" that is the most talked about, the "video assistant referee" technology. As the name suggests, its existence is through the video video playback technology, assisting the referee on the court to make the correct penalty. The game is fierce on the football field, the rhythm is fast, and the speed of the ball is very fast. The referee needs to make judgments in the blink of an eye, which is not an easy task. Even though the law enforcement World Cup is the most experienced referee, the World Cup is often misjudged. But after having a VAR, the situation is very different from the previous one. In the third match day of France against Australia, VAR played a crucial role. In the 58th minute, Bogba midfielder penetrated the Australian defense line. Gleizman quickly plugged in. He fell in the penalty area under Risden's shovel defense, but the referee signaled the game to continue. But not long after, the referee suddenly indicated that he had interrupted the game. He personally ran to the side of the field to watch the video playback, and then awarded a penalty and also showed the Australian defensive player Resden a yellow card. Gleizman personally punished the penalty kick created by himself and rewrote the score to 1:0. In the end, the French team defeated the Australian team 2:1. Obviously, if there is no VAR, the result of the game is likely to be rewritten. So how does VAR work? The first step in applying VAR technology: the event occurs VAR can only begin to brew when disputes about the following four situations occur. They are the goal, the penalty kick, the direct red card and the penalty player. Offside will result in invalid goals. The ball can't be seen when it's over the line. The invisible foul in the penalty area will result in a penalty. The fake fall in the penalty area may also lead to a penalty. The direct red card needs to be cautious; the penalty may also be possible. Wrong the object. The VAR can only begin to function when determining these major events. Step 2 of applying VAR technology: Video Assistant Referee watches the playback video and provides advice to the referee Controversy has occurred at this time, but the game is likely to continue, because watching the playback video is first done by the video assistant referees who are in the small room. They will make a decision based on what they have seen and report to the referee. Step 3 of applying VAR technology: decision by the referee After hearing the feedback from the video assistant referee, the referee will decide whether to directly adopt it or go to the side to check it himself, or ignore it. The video assistant referee is only an assistant, and the final decision still belongs to the referee. The referee may suspend the game to watch the replay or get a clearer VAR prompt. If the decision is changed or the original judgment is implemented, the referee will make such a gesture to explain that this is the decision I made after consulting the VAR. VAR implementation conditions It is not easy to implement a "absolutely correct" playback system with no dead ends in all directions. VAR technology uses an automatic 3D system. After laser calibration, several cameras placed around the stadium will achieve triangulation positioning during the game. The system distinguishes the space around each player. Even if the offensive player only has an arm or a half shoulder that exceeds the boundary of the defender's space, the system can issue a clear offside prompt. GOAL-LINE TECHNOLOGY Just now, you may have noticed that in one of the starting conditions of the VAR "controversy about the goal", in addition to the offside, we also mentioned a situation, that is, "whether the football crosses the line." The rules in the football game stipulate that the goal is counted only when the ball completely crosses the goal line. However, between the speed of the ball and the possibility of multiple rebounds, there is no way to say whether the football has passed the line or not, and even watching the playback directly cannot guarantee the clear. It doesn't matter if the human eye can't see the slow-motion playback. The door line technology is introduced on the World Cup. The high-precision detection device automatically determines whether the football crosses the goal line. A smart chip is built into the football, and a magnetic induction module is also installed in the football field. Therefore, in conjunction with the high-definition camera around the venue, whether or not a goal can be accurately judged and transmitted to the smart watch worn by the referee, the entire decision process usually takes less than one second. The audience will also see a very clear and intuitive decision process. RandM Glory 4800 is a disposable vape device with neat design. It contains 10ml 0/2/3/5% nicotine salt e-juice and vape up to 4800 puffs. There are 12 flavors for you to choose. This devices contains 1100 mah built in battery, which can vape till last drop of ejuice.
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