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Science Of Pocket Billiards Download Pdf


The Science of Pocket Billiards




Pocket billiards, also known as pool, is a popular game that involves hitting a white cue ball with a cue stick to make it collide with other balls on a rectangular table with six pockets. The game requires skill, strategy, and knowledge of the physics behind the motion of the balls. In this article, we will explore some of the basic and advanced concepts in the science of pocket billiards.


Basic Concepts




Some of the basic concepts in the science of pocket billiards are:


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  • Aim: The aim is the direction in which the cue stick points when it contacts the cue ball. The aim determines the initial direction and speed of the cue ball.



  • Spin: The spin is the rotation of the cue ball around its center. The spin affects the trajectory and behavior of the cue ball after it contacts other balls or cushions. There are different types of spin, such as top spin, back spin, side spin, and no spin.



  • Speed: The speed is the magnitude of the velocity of the cue ball. The speed affects the distance and energy of the cue ball.



  • Angle: The angle is the measure of the deviation of the direction of a ball from a reference line. For example, the angle of incidence is the angle between the direction of the cue ball and the normal line (perpendicular) to the surface it hits. The angle of reflection is the angle between the direction of the cue ball after it bounces off a surface and the normal line to that surface.



  • Cushion: The cushion is the padded rail that surrounds the playing surface of the table. The cushion acts as a spring that changes the direction and speed of a ball that hits it.



  • Pocket: The pocket is the hole at each corner and at the midpoint of each long side of the table. The pocket is where a ball must go in order to be scored.




Advanced Concepts




Some of the advanced concepts in the science of pocket billiards are:



  • Deflection: Deflection is the change in direction of the cue ball due to the sideways force exerted by the cue stick when it hits it off-center. Deflection causes the cue ball to swerve away from its intended path.



  • Squirt: Squirt is another term for deflection. It is usually measured by how much a cue ball misses its target when hit with side spin.



  • Throw: Throw is the change in direction of an object ball due to friction and spin transfer from the cue ball when they collide. Throw causes an object ball to deviate from its natural path.



  • English: English is another term for side spin. It is usually applied by hitting the cue ball on its left or right side. English affects how a cue ball curves, caroms, banks, and throws other balls.



  • Bank shot: A bank shot is a shot where a ball is made to bounce off one or more cushions before going into a pocket. A bank shot requires precise calculation of angles, speed, and spin.



  • Kick shot: A kick shot is a shot where a cue ball is made to hit one or more cushions before hitting an object ball. A kick shot is often used to escape from a snooker or to hit a hidden ball.




References




The information in this article was based on:



  • The Science of Pocket Billiards by Jack H. Koehler






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