人在认识客观世界时,要依赖感觉和思维器官。眼睛,是感觉器官中最重要的部分。人的思维活动,大量依靠眼睛的观察活动。 容观世界是物质的,有形有色的。因此,观察必须是通过形体色彩的变化来感知的。例如日月、房屋、树叶、河流、人兽、机器、明暗、红绿等等。而当肉眼不能观察到的时候,却能借助显微镜和 When people know the objective world, they rely on feeling and thinking organs. The eyes, the most important part of sensory organs. Human thinking activities, relying heavily on the eyes of the observation activities. To observe the world is material and tangible. Therefore, the observation must be perceived through changes in physical color. Such as the sun and the moon, houses, leaves, rivers, animals, machines, light and shade, red and green and so on. When the naked eye can not be observed, but with the help of a microscope