Football and ball

Football is a sport that has millions of fans around the world. However, the better the sports equipment is, the more sport will develop. That's why Nike had to test 15 different ball models to produce a Total 90 Aerow Hi-Vis ball.

The principle of the ball curvature of a shot

Aerodynamic principles make the ball fly after being hit by the player's force. However, from this side of the ball, swirling air has the same direction as the air flow. This phenomenon causes the flight speed of the ball to increase rapidly.

One of the properties of air movement is that when the air movement speed increases, the air pressure decreases. The reduced pressure on this side is related to the other side of the ball, which tends to move sideways when flying forward.

When a player hits, the ball will appear eccentric and create a spin when the ball is forward. The flying ball will create a " whirlpool " in the air while the ball is still facing forward. On this side of the ball, this air vortex goes against the airflow towards it.

Thanks to the training process, some of the top soccer players can kick the ball, making it not only curved but also certain. This makes sense in penalty situations, it will make the shot not only pass the player fence but also fly into difficult or narrow corners of the goal. With high-tech balls, the player will master the spin of the shot more. Previous pure leather balls were too heavy to make difficult and beautiful shots. Modern balls carefully designed the details of the surface with ultra-light materials, so with the same force, the shot will be much more beautiful and beautiful.

Deformation

A ball will deform when under pressure because it is not completely hard, but it is difficult to see in normal conditions. In this image, we see the concave point in the lower part of the ball created by the pressure of the shoe tip. When the ball is deformed, the air inside it reacts like a spring. The ball and the air inside are affected by the force from the shot. Then they create the force that makes the ball bounce.

Marco Bresciano is Total 90 Aerow Hi-Vis ball of Nike. This ball is designed to be faster and more accurate than any ball on the market. It is made up of 6 shells that create durability and react faster with a shot. This ball is also made of a special type of mold, which helps the remote shots remain accurate.

The shot will determine how much the ball will fly.

Kim Thành - Source: How cool stuff works

History: The first modern ball was born in 1855. It is made of a rubber-inflated gut and a leather cover.

Future: Future balls may be fitted with wave-catching equipment, which helps determine whether the ball has gone beyond the goal line or has not become more accurate.