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Easy Tennis Ball / tennis ball

Easy Tennis Ball
Easy Tennis Ball

Excessively weared tennis ball causes a lot of problems, which detrimentally influence the feel of playing tennis by cutting its bounce and faster its speed. Worse stll, excessively weared ball may lead to injury such as tennis elbow because of the loss of buffer. It is difficult for people to tell whether the tennis ball has enough thickness of wool felt to play. Easy tennis ball provides a easy way to tell when the ball is time to discard, which yet again to contribute to ecological and resource protection.

University

University of Edinburgh

University of Edinburgh
SHANGHAI, China

Mingwei Zhang,
University of Edinburgh

Dongyun Yang,
University of Edinburgh

Huachao Gong,
Tsinghua University