How does a cricket ball swing?

Question

I have been trying hard to swing the ball but always fail can you please help me know the technique to bring swing in the ball during bowling.

Answer 1

  Answer By "polishing" an older ball (say 30-40 overs) on one side only, especially in damp weather, what happens is that the polished side has less air-friction and thus moves faster than the unpolished side, causing turn in mid-air.