| 摘要 |
PURPOSE: A golf ball is provided to enable a user to confirm the accuracy of a tee shot according to the color of the golf ball by sensing movement energy. CONSTITUTION: The core ball of a golf ball is prepared. An ionomer polymer is projected from the outer layer of a core layer. After dimple is formed, a thermo-chromic pigment is included at transparent paint according to the weight of the golf ball. The thermo-chromic pigment is changed from blue color into white color in ten Celsius. The thermo-chromic pigment is changed from red color into the white color in twenty Celsius. The thermo-chromic pigment is sprayed at the cover layer of the golf ball.
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