The wood of the bat, often referred to as the “blade”, often has somewhere between one and seven layers of wood, although sometimes cork, fiberglass, carbon fiber, aluminum fiber and kevlar are used. Block A block is executed by simply placing the racket in front of the ball immediately after the rebound of the ball; Thus, the ball returns with almost as much energy towards the opponent as it came in. Backspin is often used on duty because it is more difficult to produce an offensive return, although at a professional level most people serve sidespin with backspin or topspin. Obstruction means that a player touches the ball when he is above the playing surface or heading towards the playing surface because he has not touched the player's place since he was last hit by the player. (It is possible to play defensive topspin lobs from far behind the table, but only highly qualified players use this blow with any tactical efficiency. Theoretically, this type of spin creates the most disgusting effects, but it is less strategically practical than sidespin or backspin, because of the limitations it imposes on the opponent during its return. The racket is closed and held near the ball, which is hit with a short movement “off the bounce” (immediately after hitting the table), so that the ball moves faster to the other side. Traditionally, Penhold players use only one side of the racket to hit the ball during the normal game, and the side that is in contact with the last three fingers is usually not used. History Parker Brothers Ping-Pong Game The sport originated in Victorian England, where it was played under the upper class as an after-dinner stube game. There are also professional competitions at club level; the respective leagues of Austria, Belgium, China (especially the China Table Tennis Super League), France, Germany and Russia are examples of the highest level. Although the opponent can smash the ball hard and fast, a good defensive lobe could be returned more difficult due to the unpredictability and high amounts of rotation on the ball. For example, if the order of the game is A-X-B-Y at the beginning of the first game, the order begins with X-A-Y-B or Y-B-X-A in the second game, depending on whether X or Y is selected as the first server of the game. A speed drive is mainly used to keep the ball in play, put pressure on the opponent and potentially open a chance for a stronger attack. Although almost every blow or service generates a kind of spin, understanding each spin type allows players to effectively defend themselves against different spins and use them effectively. Let A Let is a rally from which the result is not achieved and is called under the following circumstances: the ball touches the net in the service (service), provided that the service is otherwise correct or the ball is hindered by the player on the receiving side. Another difference is that unlike Backspin and Topspin Sidespin, relatively little will affect the rebound of the ball, similar to how a rotating top would not travel left or right if its axis of rotation were exactly vertical. The server beats the ball with the racket on the departure of the ball so that it first touches its place, and then directly touches the place of the receiver, without touching the grid arrangement. However, like the backspin stroke, the spin axis remains roughly perpendicular to the trajectory of the ball, so that the Magnus effect can dictate the subsequent curvature. The only purpose of this line is to facilitate the double service rule, which states that the service must come from the right “box” in such a way that the first bounce of the service bounces once in the said right box, and then at least once in the opponent's r box. or the receiving pair receives a point. In table tennis, Topspin is considered an offensive technique because of the increased ball speed, the lower biomechanical efficiency and the pressure it exerts to the opponent by reducing the reaction time. This stroke greatly improved and strengthened the Penhold style, both physically and psychologically, as it eliminates the strategic weakness of the traditional Penhold backhand. A let is also called foul service when the ball hits the side of the table, when the ball goes no further than the edge and when the ball hits the edge of the table and hits the net. Corkspin players use this kind of spin almost exclusively when serving, but at the professional level it will also be praised from time to time.