Why do the goalkeeper hate the new World Cup ball?

In the opening match of the World Cup, German midfielder Torsten Frings scored an impressive goal from a distance of 36 meters. At first the ball flew straight and suddenly swung to the right within the last 10 meters.

It was an unstoppable shot, but with other balls, saving the goal could have been easier.

One scientist explained why the new type of ball used in this year's World Cup discouraged goalkeepers.

Adidas' new Teamgeist ball, as its name suggests, is made up of 14 pieces instead of 26 or 32 pieces as traditional to form a sphere.

Explain the path of the swirling ball.( Photo: LiveScience )

Fewer pieces mean fewer stitches, making football more similar to baseball, said Ken Bray, a sports scientist at Bath University in England.

Complicated spiraling air in the air will cause a spinning ball to drift towards the direction of the ball. (side photo)

This is explained as follows: A ball moving forward while spinning in a clockwise direction will create greater friction on its left side (that is, by the left side of the opposite motion gas). This makes the pressure on the left a little higher, making the ball tend to shift to the right to try to reach balance. If the ball rotates in the opposite direction of the clock, the opposite will happen.

However, a non-rotating ball may bounce to any unpredictable side. Baseball players took advantage of this physical feature to throw a ball.

This World Cup ball is designed to be more baseball-like, meaning the ball will spin lazily in the air, while stitches will break the air flow around the ball at certain points on the surface, making its path very difficult to guess.

T. An