In the relevant physical experiments, it was found that under the influence of different conditions of cold, hot, wet and dry, the elasticity of table tennis will change significantly. Many professors in the School of Material Science and Engineering of Jiangxi Normal University of Science and Technology said that the different humidity and temperature have an impact on table tennis, especially the different wet and dry conditions. From a physical point of view, the wetter the surface of table tennis, the greater the friction force and the greater the resistance of the ball. Table tennis is more difficult to play.
The lower the surface temperature of the ball, the stronger the rigidity of the ball and the less friction it will have. In contrast, it will be easier to play. On the contrary, the higher the surface temperature of the ball, the weaker the rigidity of the ball and the greater the friction force.
However, air blowing can not play a significant role in the hot, dry and wet of table tennis, so it is likely that the surface of the ball is covered with dust. Air blowing can make the surface of the ball smooth and clean, and can produce better balls.
In addition, professional table tennis coaches have explained this phenomenon: blowing may be a habit of some athletes, or it may be a psychological hint to bring good luck to oneself as netizens say, of course, it may also be a way to decompress oneself in tense competitions.
Source: Netease Sports Responsible Editor: Bai Wuhao_NS2189