Raman refers to the Raman effect, a phenomenon in which light interacts with molecular vibrations, leading to a change in the light's wavelength. This effect is the basis for Raman spectroscopy, a technique used to analyze the composition of materials by observing the scattered light. It is widely used in chemistry, biology, and materials science to identify substances and study molecular structures. The Raman effect was discovered by Indian physicist C.V. Raman in 1928, for which he received the Nobel Prize in Physics in 1930. His work has had a significant impact on various scientific fields, enabling researchers to gain insights into molecular behavior and interactions.