Chaos theory on flight of new footballs
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Modern footballs give attacking teams an unfair advantage because their design makes it hard for goalkeepers to anticipate where a shot is heading, a scientist has claimed.
Dr Ken Bray, a physicist at Bath University, has studied free-kicks from Premiership, World Cup and European Championship matches and found that top players such as the Manchester United star Cristiano Ronaldo are exploiting the chaotic flight and speed of modern balls to score goals.
Speaking at the British Association for the Advancement of Science Festival in Liverpool, Dr Bray called on football's governing body, Fifa, to step in with new regulations on aerodynamic qualities of footballs. He argued that Fifa already dictates the size, weight and bounce of footballs used in competitive matches, but does not specify how the ball should behave when it is kicked.
With professional players able to kick the modern lightweight balls harder and faster than previous generations, the flight of the ball is an important issue.
Dr Bray said: "Fifa dictates all aspects about ball design apart from the aerodynamics, yet there is no reason why you couldn't design a football so that you know if you spin the ball as much as Beckham for example, you know how much it will swerve in flight."
Ronaldo, 23, is feared for his free-kicks that cause the ball to change direction unpredictably in mid-air, bewildering goalkeepers.
Unlike players such as David Beckham, who mastered the ability to put spin on the ball so that it dipped and swerved into the net, Ronaldo kicks the ball so that it barely spins on any axis. This means that as air rushes over the seams of the ball it creates turbulence that can suddenly change the ball's trajectory at random.
"While Beckham can reasonably predict where his shot will end up, with Ronaldo it is down to the physics of chaos once the ball leaves his foot. It makes it very disconcerting and unfair for goalkeepers," said Dr Bray.
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this is so lol
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Originally posted by youyayu:
this is so lol
yeah, its like nerds... only that they use the football haha
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Originally posted by sand king:
yeah, its like nerds... only that they use the football haha
but i think the "scientist" is a ronaldo hater...
Unlike players such as David Beckham, who mastered the ability to put spin on the ball so that it dipped and swerved into the net, Ronaldo kicks the ball so that it barely spins on any axis. This means that as air rushes over the seams of the ball it creates turbulence that can suddenly change the ball's trajectory at random.
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its just a bloody ball
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if all teams use same ball, all player has same advantage....
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Originally posted by skythewood:
if all teams use same ball, all player has same advantage....
i guess its a standard right?
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Originally posted by youyayu:
but i think the "scientist" is a ronaldo hater...
Unlike players such as David Beckham, who mastered the ability to put spin on the ball so that it dipped and swerved into the net, Ronaldo kicks the ball so that it barely spins on any axis. This means that as air rushes over the seams of the ball it creates turbulence that can suddenly change the ball's trajectory at random.
haha they practice so much so that they become one with the ball haha!
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It's called ramming.
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he is speaking on behalf on those who scared of hitting by the ball
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Originally posted by Dead_Man_Inc:
he is speaking on behalf on those who scared of hitting by the ball
make senses.. -
the physicists dont even know how to dribble
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according to him while Beckham "mastered the ability" to put spin on the ball so that it dipped and swerved into the net, Ronaldo just know "how to kick" the ball.... holy moly!!! even if Ronaldo just know how to kick, he must also know where to kick mah!!!!