👉 Spectroscopy, also known as spectral analysis, is a branch of physics that deals with the study of light and its properties. It involves observing and analyzing the spectrum of light, which includes the wavelengths or frequencies at which light is emitted or absorbed, and how those frequencies are related to the composition of matter. In spectroscopy, researchers can use various techniques to measure the frequency of a particular wavelength or energy level of light, such as using lasers or other sources of electromagnetic radiation. This information