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Golf Balls
It's always been my understanding (and that of my college professors) that dimpling an entire object serves no purpose if that object will not be changing orientation. The reason that it works on a golf ball is because the golf ball spins in the air and is not stabilized. I have seen pictures of bowling balls being dropped into some thick liquid, and they got the same effect by putting a simple wire to trip the boundary layer toward the front of the ball. Before you go dimpling the entire surface of an automobile, consider strategically placing something to trip the boundary layer.
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