What is the temperature difference between badminton 76, 77 and 78?

Badminton numbers 76, 77 and 78 indicate the speed and weight of the ball. 76 stands for light, 77 stands for medium and 78 stands for heavy. The weights of these three balls are the same at standard temperature, but their flying speeds are different at the same intensity and wind speed.

Specifically, the ball speed of 76 is slow, and it is suitable for use in a relatively high temperature environment, such as above 30℃. The ball speed of 77 is slightly faster, which is suitable for use in low temperature environment, such as 23-28℃. For 78 balls, the ball speed is faster and it is suitable for use in low temperature environment.

Generally speaking, the number of badminton can help us choose a ball suitable for different environments and temperatures. The higher the number, the heavier the ball and the faster the speed.