一、基本概念 1传热学 传热学是研究热量传递规律的学科 （1)物体内只要存在温差,就有热量从物体的高温部分传向低温部分; （2)物体之间存在温差时,热量就会自发的从高温物体传向低温物体

That streams of electrons possess the properties of beams of waves was dis- covered early in 1927 in a large industrial laboratory in the midst of a great city, and in a small university laboratory overlooking a cold and desolate sea. The coincidence seems the more striking when one remembers that facil- ities for making this discovery had been in constant use in laboratories throughout the world for more than a quarter of a century. And yet the coincidence was not, in fact, in any way remarkable. Discoveries in physics are made when the time for making them is ripe, and not before; the stage is set, the time is ripe, and the event occurs-more often than not at widely separated places at almost the same moment

When in 1920 I resumed my studies of theoretical physics which had long been interrupted by circumstances beyond my control, I was far from the idea that my studies would bring me several years later to receive such a higl and envied prize as that awarded by the Swedish Academy of Sciences each year to a scientist: the Nobel Prize for Physics. What at that time drew me towards theoretical physics was not the hope that such a high distinction

Nobel lecture december 12, 1933 On passing through an optical instrument, such as a telescope or a camera lens, a ray of light is subjec reflecting surface. The path of the rays can be constructed if we know the two simple laws which govern the changes in direction: the law of refrac- tion which was discovered by Snellius a few hundred years ago, and the law of reflection with which Archimedes was familiar more than 2,000 years ago

一、算符解法 二、系统常用量子光学,固体

◼ 不好分割 ◼ 整体近似 ◼ 总能做

当扰动依赖于时间时，就不是能级问题，而是能级间的变化问题或跃迁问题

《量子力学》第五章 近似方法 5.1 定态微扰论

一般原子的结构:核外好多电子

4-5角动量耦合 一、角动量的本质 二、对易关系