Molecular vibrations refer to the oscillation of atoms within a molecule as they move relative to each other. These vibrations occur at specific frequencies, and studying them provides valuable information about the structure, bonding, and dynamics of molecules. Techniques such as infrared spectroscopy and Raman spectroscopy are commonly used to study molecular vibrations. Understanding molecular vibrations is crucial in fields such as chemistry, biochemistry, and materials science, as it helps in identifying chemical compounds, determining molecular structures, and studying chemical reactions.