UV-Vis Spectroscopy is a widely used analytical technique for studying the absorption and transmission of ultraviolet (UV) and visible (Vis) light by materials. It involves passing light of varying wavelengths through a sample and measuring the intensity changes due to absorption or transmission. This technique provides valuable information about electronic transitions in molecules and is used to analyze chemical structures, concentrations, and material properties. Its applications span chemistry, biology, and materials science, including quantifying solution concentrations, characterizing nanoparticles, and studying reaction kinetics.