Although the quantum laws are thought to be valid for objects of all sizes ? from elementary particles to the universe as a whole ? we do not usually see matter waves or any other quantum behavior in our everyday world 虽然量子定律应该适用于各种不同大小的物体(从基本粒子到整个宇宙) ,但在日常生活里,我们通常看不到物质波或是其他的量子现象。