| 摘要 |
PROBLEM TO BE SOLVED: To provide a golf ball having excellent flight performance because of an excellent hardness distribution measured by an evaluation method of hardness which has excellent measurement accuracy and can sufficiently evaluate a difference in performance between samples.SOLUTION: A golf ball includes: a spherical core 4 comprising at least one layer; and a cover 12 comprising at least one layer and covering the spherical core 4. About the number N per unit volume of a scatterer wherein a gyration radius Robtained by performing curve fitting with a specific expression to a scattering intensity curve Iobtained by X-ray scattering measurement or neutron beam scattering measurement is 1 nm-100 μm, the number N of an outermost part of a rubber composition/the number N of an innermost part of the rubber composition is ≥2.0. |
