WEIGHT;- 437 grams
CIRCUMFERENCE;- 69 cm
REBOUND;- 141 cm
WATER ABSORPTION;- 0.2 %
This will be the 12th ball created by Adidas for the World Cup.
Tutakumbuka kwamba adidas walikuwa critised baada ya kuonekana kwamba mpira wa Jabulani uliotumika kwenye world cup ya SA ulikuwa haukidhi viwango kwa namna Fulani.
Its trajectory is unpredictable aliiwahi kusema lipa wa Italia Gianluigi Buffon. Striker wa Brazil yeye uliutaja kama ni Supernatural
Kutokana na mkasa wa Jabulani, Adidas wanatuambia wamefanya improvements kwenye Brazuca. The texture of the Brazuca is rougher. They have what I would call tiny little pimples, which also would help in terms of the aerodynamics Says Dr Mehta the branch chief at the US space agencys (Nasa).
The rougher texture would also help solve other issues, like when you kick the ball there is more friction between the boot and the ball.
But the major factor influencing the roughness is the geometry of the balls seams. Seams are important because they determine to a large extent the roughness of the ball
Rougher balls also travel further. As a football flies through the air, its seams stir and agitate the air like the dimples do on golf ball or the fluff on a tennis ball, explains Dr choppin
The Brazuca has six thermally bonded propeller-shaped panels, less than eight of the Jabulani, 14 of the Teamgeist(official ball at the 2006 world Cup in Germany) or the 32 of traditional footballs. Adidas says the new seam geomenty will give the ball aerodynamic accuracy and a stable flight.
Dr Mehta says its the knuckling effect that makes life difficult for goalkeepers. And chopping added the seams are more effective agitators of the air, so the knuckling is less likely to occur at the high speeds. I think the Brazuca will be more stable at high speed than its predecessors
For the Brazuca, the critical speed to get maximum knuckling effect is around 30mph (48Km/h). For the Jabulani it was more like 50mph (80Km/h).
So if the players are listening to this, they should not kick the ball as hard now compared with 2010!!
CIRCUMFERENCE;- 69 cm
REBOUND;- 141 cm
WATER ABSORPTION;- 0.2 %
This will be the 12th ball created by Adidas for the World Cup.
Tutakumbuka kwamba adidas walikuwa critised baada ya kuonekana kwamba mpira wa Jabulani uliotumika kwenye world cup ya SA ulikuwa haukidhi viwango kwa namna Fulani.
Its trajectory is unpredictable aliiwahi kusema lipa wa Italia Gianluigi Buffon. Striker wa Brazil yeye uliutaja kama ni Supernatural
Kutokana na mkasa wa Jabulani, Adidas wanatuambia wamefanya improvements kwenye Brazuca. The texture of the Brazuca is rougher. They have what I would call tiny little pimples, which also would help in terms of the aerodynamics Says Dr Mehta the branch chief at the US space agencys (Nasa).
The rougher texture would also help solve other issues, like when you kick the ball there is more friction between the boot and the ball.
But the major factor influencing the roughness is the geometry of the balls seams. Seams are important because they determine to a large extent the roughness of the ball
Rougher balls also travel further. As a football flies through the air, its seams stir and agitate the air like the dimples do on golf ball or the fluff on a tennis ball, explains Dr choppin
The Brazuca has six thermally bonded propeller-shaped panels, less than eight of the Jabulani, 14 of the Teamgeist(official ball at the 2006 world Cup in Germany) or the 32 of traditional footballs. Adidas says the new seam geomenty will give the ball aerodynamic accuracy and a stable flight.
Dr Mehta says its the knuckling effect that makes life difficult for goalkeepers. And chopping added the seams are more effective agitators of the air, so the knuckling is less likely to occur at the high speeds. I think the Brazuca will be more stable at high speed than its predecessors
For the Brazuca, the critical speed to get maximum knuckling effect is around 30mph (48Km/h). For the Jabulani it was more like 50mph (80Km/h).
So if the players are listening to this, they should not kick the ball as hard now compared with 2010!!
