| Abstract: | In this paper, plane grating spectrograph was used for the measurement of unknown wavelength, for example, sodium atom （Na） and mercury atomic （Hg） have been chosen for the spectroscopy research. By means of observation, measurement and analysis of spectroscopy, we can deepen the understanding of interaction between the outer electrons of the metal atom and atom, and interac- tion between spin and orbital motion, by analysis with a CCD muhi-channel spectrum analyzer and wavelength measurement. |
