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光谱学(spectroscopy)是研究光谱现象的科学,经常讨论激发谱线的光源,以及测试、分析和应用。几乎在每个现代技术领域里,光谱学都有实际的应用。用光谱方法人们能在实验室中分析少量材料的成分,其精度和速度是用化学过程所无法达到的。测试受控热核聚变的温度仪为光谱的另一特殊的应用。研究原子与分子的结构,天文学中预测太阳磁暴和用光谱分析星体的化学成分都是光谱学的成就。由莫塞莱(Moseley,1887—1915)的工作(X射线特征波长与原子序数之间的关系)
Spectroscopy is a science that studies spectroscopic phenomena, often discussing light sources that excite spectral lines, as well as testing, analyzing, and applying them. In almost every modern technology, spectroscopy has practical applications. With spectroscopy, one can analyze the composition of a small amount of material in a laboratory, the accuracy and speed of which can not be achieved by chemical processes. Thermometers that test controlled thermonuclear fusion are another special application of spectroscopy. Studying the structure of atoms and molecules, the prediction of solar storms in astronomy, and the spectroscopic analysis of the chemical composition of stars are all spectroscopic achievements. By Moseley (Moseley, 1887-1915) work (X-ray characteristic wavelength and the relationship between the atomic number)