Soccer

Soccer Turbulent Air & Drag

When the airflow over a ball is turbulent, the boundary layer sticks to the ball almost until the air has completely passed over the ball. This produces late separation and a small drag. First published in Physics World magazine, June 1998 pp25–27.  https://physicsworld.com/a/the-physics-of-football/

Ball Drag

The drag coefficient of a ball plotted against Reynold’s number – a non-dimensional parameter that takes into account both the velocity and diameter of the ball. The drag coefficient drops suddenly when the airflow at the surface of the sphere changes from laminar to turbulent. The position of the discontinuity depends on the roughness of …

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Spinning Ball

A bird’s-eye view of a football spinning about an axis perpendicular to the flow of air across it. The air travels faster relative to the center of the ball where the periphery of the ball is moving in the same direction as the airflow (left). This reduces the pressure, according to Bernoulli’s principle. The pressure …

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OFFICIAL LA LIGA MATCH BALL 2014/2015 – ORDEM 2

The Nike® Ordem 2 is the official match ball of the La Liga 2014/2015 season. Charged with high-performance technologies, this premium constructed soccer ball features Aerowtrac grooves and a micro-textured cover for true, precision flight. Its fuse-welded surface and 12-wing restricted bladder offer superior touch and responsiveness off the foot, while RaDaR (Rapid Decision and Response) technology …

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OFFICIAL SERIE A MATCH BALL 2014/2015 ORDEM 2

The Nike® Ordem 2 is the official match ball of the Serie A 2014/2015 season. Charged with high-performance technologies, this premium constructed soccer ball features Aerowtrac grooves and a micro-textured cover for true, precision flight. Its fuse-welded surface and 12-wing restricted bladder offer superior touch and responsiveness off the foot, while RaDaR (Rapid Decision and Response) technology …

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OFFICIAL EPL MATCH BALL 2014/2015 ORDEM 2

The Nike® Ordem 2 is the official match ball of the English Premier League 2014/2015 season. Charged with high-performance technologies, this premium constructed soccer ball features Aerowtrac grooves and a micro-textured cover for true, precision flight. Its fuse-welded surface and 12-wing restricted bladder offer superior touch and responsiveness off the foot, while RaDaR (Rapid Decision and Response) …

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2017 Major League Soccer Official Match Ball – NATIVO

Adidas and Major League Soccer Unveil the 2017 Official Match Ball -NATIVO’s new design features symbols of the United States and Canada representing unity in North America soccer- -Design inspiration epitomizes how soccer transcends the field- -Ball debut on-pitch on March 3rd as 2017 MLS season kicks off- Portland, Ore. January 12, 2017 – Adidas and Major …

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