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It is because of the air friction. To make a ball swing one side is shined up and made smooth while the other side is left to be scuffed by the pitch and what not. When the ball travells through the air the shined side goes faster as there is less air resistance this causes the ball to swing to a side.
It's going to be repeated.
fall down on the earth or in the hands of a fielder
I believe that spin is exerted on to the ball by the hand, swing is how the ball moves in the air and turn is what the ball does off the pitch. If you're asking about cricket.
In baseball when a batter swings all the way through with force and hits nothing but air.
In cricket, wrist spin is the act of spinning the ball in the air with a wrist-flicking motion before the ball is removed from the hand.
When the ball is older and there is an asymmetry in roughness the seam no longer causes the pressure difference, and can actually reduce the swing of the ball. Air turbulence is no longer used to create separation point differences and therefore the lift and pressure differences. On the rough side of the ball there are scratches and pits in the ball's surface. These irregularities act in the same manner as the dimples of a golf ball: they trap the air, creating a layer of trapped air next to the rough side of the ball, which moves with the surface of the ball. The smooth side does not trap a layer of air. The next layer of air outward from the ball will have a greater velocity over the rough side, due to its contact with a layer of trapped air, rather than solid ball. This lowers the static pressure relative to the shiny side, which swings the ball. If the scratches and tears completely cover the rough side of the ball, the separation point on the rough side will move to the back of the ball, further than that of the turbulent air, thereby creating more lift and faster air flow. This is why a new ball will swing more than a old ball. If the seam is used to create the turbulent air on the rough side, the tears will not fill as quickly as they would with laminar flow, dampening the lift and pressure differences.
Cricket is an English Ball sport- a type of insect, and the Crickets were the back-up Band of Buddy Holly ( lost in l959 air crash). That"s it on the cricket file.
Cricketers Spit on otherwise known as "shining" a cricket ball as they would like their fast bowlers to be able to swing the ball in later overs. They only shine on side and leave the other side "rough". When bowling, the bowler will bowl with the seam (middle of a cricket ball) in an upright position and when the ball is delivered, the air will travel faster past the smooth, shined side of the ball and on the other side there will be drag and air will get caught on the rough side... this difference in wind speeds passing the ball results in ball "swining"- movinging in the air.
It is where a batsmen hits the ball into the air and without a bounce a fielder catches it meaning the batsmen is out.
Outswing Means Swinging Away From The Batsman. The Ball Will "Spin" in The Air (Swing) From The LegSide To The Offside.
A cricket ball moves simultaneously in two motions which are rotary and linear. The velocity of the air below the ball is decreased because these two motions are opposing each other. Thus, the pressure on the upper side of the ball is lesser and there is an upward force that works upon the ball. This makes the ball follow a curved path and not a parabolic one.