Time-resolved spectroscopy is a technique used to study the dynamics of chemical and physical processes by measuring how light interacts with matter over time. It captures rapid changes in a sample, allowing scientists to observe events that occur in the picosecond to nanosecond range. This method is essential for understanding reactions, energy transfer, and molecular interactions. By using short pulses of light, researchers can track the evolution of excited states and other transient species. Time-resolved spectroscopy is widely applied in fields such as chemistry, biochemistry, and materials science, providing insights into fundamental processes and aiding in the development of new technologies.