分光计是实验室中常用的一种光学仪器,利用它来研究元素光谱。用分光计测定元素光谱时,首要的一步是要作出分光计的定标曲线.即谱线波长W与谱线在分光计上的相对偏向角D之间的关系曲线。该曲线作得精确与否,对波长的最终测定影响极大。传统的方法是用某元素的若干条已知谱线Wi,测得其对应的相对偏向角Di.然后 Spectrometer is commonly used in the laboratory of optical instruments, using it to study the elemental spectrum. When spectrophotometer is used to measure the elemental spectrum, the first step is to make a calibration curve of the spectrometer, that is, the relationship between the wavelength W of the spectrum and the relative deflection angle D of the spectrometer. The curve is accurate or not, the final determination of the wavelength of great influence. The traditional method is to measure the corresponding relative deflection angle Di with several known lines Wi of a certain element