Spectroscopy of the element sodium is generally a subject that studies the emission or absorption of electromagnetic radiation by the sodium atom. Sodium is an element in group 3 of the periodic table, and the spectral lines of the sodium atom are widely used, especially in applications such as sodium lamps. Sodium's spectral lines are spectral lines that appear at characteristic wavelengths resulting from specific energy levels of the atom. These lines are formed as a result of sodium moving to certain energy levels or emitting energy from these levels. Spectroscopic analysis of sodium provides important information about the structure, energy levels and behavior of the atom. Sodium spectroscopy is used in many fields such as chemistry, physics and materials science. These studies allow us to better understand the atomic structure and properties of sodium and to study the behavior of sodium in different environments. This information can help us optimize the use of sodium in industrial and scientific applications.