Spectroscopy focuses on examining the interaction occurring between electromagnetic radiation and matter, where the radiation’s wavelength operates as a function. Its advancement has paved the way for analyzing the interaction occurring in different particles through dependence on collision energy. A particular beam of electromagnetic radiation is made to interact with a given sample. The electrons absorb the electromagnetic radiation, and they get excited. They move to the excited state from the ground state and further get de-excited when they return to their ground state by emitting light radiations. Spectroscopy provides information about the structural aspect of atoms or molecules. It discovers the composition and quantity of a given sample, which is possible due to the distant reflection depicted by each atom or molecule. A graph of the intensity of absorbed/emitted light versus frequency or wavelength is plotted to obtain the spectrum, and then this spectrum is measured by the spectrometer.