Hello Everyone, I'm new to your forum and was hoping to get some answers concerning physics being applied to a roulette wheel. I'm a member of a roulette forum where there is presently a member that states he can predict 99% of the time where the ball will land within a +/- 18 number sector on the wheel. He states he clocks the time it takes for the ball to make 1 revolution and the rotor speed of the wheel and can determine where the ball will strike the wheel. He states based on these visual measurements he can apply the scatter affect of the ball to accurately 99% of the time predict which half of the wheel the ball will land. Is this possible using physics and to the degree he states? I'm aware that if the same amount of force was used to spin the ball everytime it would be possible to some degree to know when the ball will start to fall, but is it possible to figure how far the ball will scatter based on the amount of force used to spin the ball? I would appreciate any thoughts on this matter, I just can't believe this is possible using visual observations.