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Finger rotation surrounding the instant of delivery can induce axis rotation (side rotation), causing the ball to hook (curve). In the sport of ten-pin bowling, there are many different ways in which to deliver (known as a "throw" or "roll") the bowling ball in order to advance it toward the pins in an accurate and powerful manner. Generally ...
Axis rotation: Angle of the ball's axis of rotation in a horizontal plane, measured with respect to a line parallel to the foul line. Generally, axis rotation is imparted by turning the ball, [21] and significantly contributes to hook. [3] Initial axis rotation is defined at the time of release.
Analysis of the influence of axis rotation (sometimes called side rotation) is more complex: There is a degree of axis rotation—generally 25° to 35° and varying with ball speed and rev rate—that may be considered optimal in that hook is maximized; however, this optimum axis rotation also causes minimal length. [27]
The bowler's delivery (see Effect of delivery characteristics on ball motion) Characteristics of the ball's delivery that affect ball motion include the ball's speed going down the lane, its rotational speed , the angle of the ball's axis of rotation in horizontal and vertical planes (axis rotation and axis tilt, respectively), and how far ...
The Magnus effect is not responsible for the movement seen in conventional swing bowling, [30]: Fig. 4.19 in which the pressure gradient is not caused by the ball's spin, but rather by its raised seam, and the asymmetric roughness or smoothness of its two halves; however, the Magnus effect may be responsible for so-called "Malinga Swing", [31 ...
Most bowlers use three holes (thumb and two fingers,). On past, one could drill additional holes on other parts of the bowling ball, to take additional weight off of a portion of the bowling ball, such as an axis hole that allows the bowling ball's hook to stabilize during its roll to the pins. Doctoring the bowling ball by adding additional ...
A sphere rotating (spinning) about an axis. Rotation or rotational motion is the circular movement of an object around a central line, known as an axis of rotation.A plane figure can rotate in either a clockwise or counterclockwise sense around a perpendicular axis intersecting anywhere inside or outside the figure at a center of rotation.
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