BALL IN CRICKET

Cricket balls are made from a core of cork which is layered with tightly wound string and covered by a leather case with a slightly raised sewn seam. The covering is constructed of four pieces of leather shaped similar to a peel of a quartered orange, but one hemisphere is rotated with 90 degrees with the respect to the other. The equator of the ball is stitched with the string to form the seam with a total of six rows of stitches. Cricket balls are traditionally white balls were introduced at night as they are more visible. The key to make a cricket ball swing is to cause a pressure difference between the two sides of the ball. The air pressure depends to the flow of air. that is to make shine one side of the ball. To make this rules allows only to rub saliva or sweat to the ball.