Cultural relativism believes that all beliefs, customs, and ethics are related to the single person within his own social setting. That is to say, people think one thing is moral in one society may be considered immoral in another, and beca...

实验装置是一个迈克尔逊干涉仪，如图1-1所示．光源Ｓ发出的光射到半镀银的海片Ａ上，Ａ与人肘光的方向成角，于是光线被分成沿互相垂立方向进行的两部分．Ｂ是一个与Ａ相同的补...