The Dhaka Times Desk Adidas has made the Brazuca the official ball of this year's World Cup. Jabulani, the official ball of the previous World Cup, was also made by them. With this they made the last 12 World Cup balls. The previous South Africa World Cup ball made by Adidas was heavily criticized.
Adidas claims this Brazuca is well-judged in terms of touch and finesse. In an interview with the BBC, the director of Adidas said, "We have analyzed every moment from the flight of the ball." Aerodynamics experts told the BBC in an interview that how effective this ball will be in the World Cup will be determined by three factors, the first of which is how smooth the ball is. Depending on the smoothness of the ball, it will be able to turn in gusty conditions. Due to this smoothness of the ball with the air, the ball cannot spin much. A NASA researcher said about this turning of the ball in the air barrier, when the ball spins more, there is no idea about the movement of the ball. This bending of the ball's trajectory due to spin is called the Magnus reaction, he said. A side effect of aerodynamics results in such a result that we call the Beckham bend.
Asked how a Brazuca like Jabulani might have bent, the NASA researcher said, "It's impossible to determine because you can't tell in advance the signs of wind movement, so it's also impossible to determine how the ball moves with that wind." The smoother a ball is, the more speed it can achieve. A ball speed can be 80 to 88 km per hour depending on the smoothness of the ball. The second factor determining the speed of the ball is the roughness of the outer surface of the ball. Examining the structure characteristics of Brazuca shows that it is quite rough. Due to its roughness it will be quite effective in kicking during play. The roughness of the pair of ends of the ball is one of the most important considerations during play. The Brazuca has six separate propeller-shaped panels. While Jabulani had 8 panels, Germany's World Cup ball had 14 and regular balls had 32. Adidas says that the new ball's geometric shape gives the ball more precision. The surface of the Brazuca ball was checked by a laser scanner and found to be 1.56 millimeters thick, three times thicker than a normal ball. Depending on the roughness of the ball, players are determined to kick the ball. As a result, how effectively a ball is kicked is determined by the roughness of the ball.
A third factor is the tendency to agitate the wind by encountering the wind. This can cause the ball to travel far and fly dependently. A proper smooth smooth ball will overcome the air barrier well. Because the force of the ball is blocked by the wind. As a result, the speed of the ball is restricted. So, the more precise the ball is, the smoother it will be able to overcome the obstacle. The NASA researcher speculates that the Brazuca will be as critical as the previous ball and that it could cause quite a problem for goalkeepers. Italian goalkeeper Buffon says this ball movement is just as confusing as the previous one. But Brazilian striker Luis Fabiano says it's super natural.
Reference: BBC
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