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光谱的观察是认识原子定态能级跃迁的基本实验,对建立能级的概念具有重要意义.长期以来观察钠原子特征谱线是采用在酒精灯焰上撒食盐的方法来做的,其缺点是产生的钠气浓度不够,又不均匀,很难使学生看清钠的吸收暗线,即使不断地在灯焰上撒食盐,暗线也不稳定.此外常会使燃烧中的食盐爆在仪器上,如果遇到阴雨天气,食盐潮解,还会腐蚀仪器.
The observation of the spectrum is a basic experiment for understanding the transition of the steady state energy level, and it is of great significance to establish the concept of the energy level. For a long time, observation of the characteristics of the sodium atom spectrum is done by the method of spreading salt on the alcohol lamp flame. The concentration of sodium gas produced is not enough, but it is not uniform. It is difficult for students to see the absorption line of sodium. Even if salt is constantly sprinkled on the flame, the dark line is unstable. In addition, the burning salt is often exploded on the instrument. If you encounter rainy weather, salt will degenerate and it will erode the instrument.