Why Golf Balls have Dimples

A golf ball is not the most aerodynamic shape. Air flowing around a round surface tends to flow smoothly around the first half of the ball, but creates turbulence as it flows behind the ball. This turbulence causes drag which slows the ball down and shortens its flight. When the surface of the ball is roughened, air flowing around the ball becomes less turbulent. Dimples create a smaller region for the turbulence, so there is less drag and the ball flies farther. The golf ball's spin is also effected by dimples. It spins as a result of the angle of the club head as it makes contact with the ball. An angled club head gives the ball backspin, which creates lift in the same way as a tennis ball. The dimples on a golf ball allow more air on the top of it and creates more lift than a smooth ball. Golf ball manufacturers mold dimples into golf balls to take advantage of both effects.

 

 

 

 

 

 

 

 

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