Raman scattering or the Raman effect ( /ˈrɑːmən/) is the inelastic scattering of a photon. It was discovered by Sir Chandrasekhara Venkata Raman and Kariamanickam Srinivasa Krishnan in liquids, and by Grigory Landsberg and Leonid Mandelstam in crystals.

When photons are scattered from an atom or molecule, most photons are elastically scattered (Rayleigh scattering), such that the scattered photons have the same kinetic energy (frequency) and wavelength as the incident photons. However, a small fraction of the scattered photons (approximately 1 in 10 million) is scattered by an excitation, with the scattered photons having a frequency different from, and usually lower than, that of the incident photons. In a gas, Raman scattering can occur with a change in energy of a molecule due to a transition (see energy level). Chemists are concerned primarily with such transitional Raman effect.

The inelastic scattering of light was predicted by Adolf Smekal in 1923 (and in German-language literature it may be referred to as the Smekal-Raman effect). In 1922, Indian physicist C. V. Raman published his work on the "Molecular Diffraction of Light," the first of a series of investigations with his collaborators that ultimately led to his discovery (on 28 February 1928) of the radiation effect that bears his name. The Raman effect was first reported by C. V. Raman and K. S. Krishnan, and independently by Grigory Landsberg and Leonid Mandelstam, in 1928. Raman received the Nobel Prize in 1930 for his work on the scattering of light. In 1998 the Raman effect was designated an ACS National Historical Chemical Landmark in recognition of its significance as a tool for analyzing the composition of liquids, gases, and solids.

Pandit Bhimsen Gururaj Joshi ( pronunciation (help·info)); February 4, 1922 – January 24, 2011) was an Indian vocalist in the Hindustani classical tradition. A member of the Kirana Gharana (school), he is renowned for the khayal form of singing, as well as for his popular renditions of devotional music (bhajans and abhangs). He was the most recent recipient of the Bharat Ratna, India's highest civilian honour, awarded in 2008.

Joshi was born into a Kannadiga family in the town of Ron, which was then in Dharwar, District in northern Karnataka state of India. His father, Gururaj Joshi, was a school teacher. Bhimsen was the eldest in a family of 16 siblings. Some of the siblings still live in their ancestral home in Gadag. Bhimsen lost his mother when he was young, and his step mother then raised him. His parents lived initially with his grandfather as tenants of a Kulkarni household, but then moved to Gadag (now a district headquarter).

As a child, Pandit Bhimsen Joshi's craving for music was evident to his family as he managed to lay his hands on a 'tanpura' used by his 'Kirtankar' grandfather, which had been kept away from his gaze at home. Music had such a magnetic pull over him that a 'bhajan singing' procession or just 'azaan' from a nearby mosque was said to draw him out of house.