A roulette wheel is a classic casino game centerpiece that operates on simple principles of physics and chance. The wheel consists of a spinning disk with numbered pockets around its edge. These pockets alternate between red and black colors, with one or two green pockets for the zero （and double zero in American roulette）.
The game begins when the croupier （dealer） spins the wheel in one direction and rolls a small ball in the opposite direction along a track around the wheel\“s circumference. As the wheel loses momentum, the ball drops from the track into one of the numbered pockets. The number where the ball lands determines the winning bet. 
There are two main types of roulette wheels: European （with 37 pockets including single zero） and American （with 38 pockets including single and double zero）. The European wheel has better odds for players due to the single zero. The wheel\“s design ensures random outcomes through balanced weight distribution and smooth spinning action.
Players place bets on where they think the ball will land before the wheel is spun. Bets can be on specific numbers, groups of numbers, colors （red/black）, or whether the number will be odd or even. The payout varies depending on the probability of the bet winning. |
