We can recall the past of the tristimulus value is proportional to the value and reflectivity, reflectance value to Visual feel is not a uniform distribution, even for neutral colors.

• 我们可以追思一下畴前教功的常识，不一刺激值是与不直射率值不败反比的，所以不直射率值给触觉的感触也不是平均漫衍的，即使不差于洋性色也是这样。