Cue ball
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In billiard games, the cue ball is usually the ball that a player must hit with the cue. It is usually white in color, although in certain games where more than one cue ball is used a second yellow cue ball may be employed (see three cushion billiards). Spots are sometimes added to allow players to visualize the ball's spin. Ideally, the cue ball should be the same size and mass as the other balls, but in certain kinds of coin operated pool tables, it may be slightly bigger and heavier.
Cue balls have been made from wood, ivory, and various synthetic materials. Modern cue balls are made from phenolic resin.
Magnetic Cue Balls
Magnetic cue balls are balls used in coin operated pool tables. They are used in conjunction with electronic sensors which when tripped, redirect the cue ball from entering a bin and thus being locked away (thereby ending the game).
See also
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