打开原子大门的钥匙──阴极射线安徽省五河一中张兆昌１９世纪末叶，经典物理已经发展到了高度完整、系统和成熟的阶段．当时的普遍看法认为，物理学的大多数基本原理已经确立，理论上带有根本性、原则性的问题都已基本解决，只剩下精确化和对细节问题的修改与补充，在化... The Key to the Atomic Gate - Cathode Rays Wuhe Yizhong, Anhui Province Zhang Zhaochang In the late 19th century, classic physics had developed to a highly complete, systematic, and mature stage. At that time, it was generally believed that most of the basic principles of physics had been established, and that fundamentally and principled problems in theory had been basically solved, leaving only refinements and modifications and supplements to detail issues. .