1922 (93 years ago): Indian physicist CV Raman does first work on what
later would culminate towards discovery of the Raman Effect.
1923 (92 years ago): The physical effect that would later come to be
called "Raman Effect" is predicted theoretically by Austrian physicist A
Smekal
1928 (87 years ago): The effect is experimentally discovered by CV Raman
and KS Krishnan of India, and practically simultaneously by the Soviet
physicists G Landsberg and L Mandelstam.
1930 (85 years ago): CV Raman receives Nobel price for this discovery
1930s: Work to exploit the Raman effect for analytical purposes is done,
notably by G Placzek of Czechoslovakia. Raman spectroscopy was used to provide
the first catalog of molecular vibrational frequencies. However, applicability
was limited by the inavailability of high-power, monochromatic light sources
1960: The first laser is built by US engineer TH Maiman.
1960s (around 50 years ago): With the advent of the laser as a suitable
source of monochromatic light, Raman spectroscopy is reintroduced and becomes
a common analytical tool.
1970 (45 years ago): CV Raman dies
1970s-1990s: Raman spectroscopy finds many many applications, is developed
in many variants, and becomes widely used in various science disciplines such
as medical and biological research, material science and forensics
1998 (17 years ago): The Raman effect is designated as a National Historic
Chemical Landmark by the American Chemical Society "in recognition of its
significance as a tool for analyzing the composition of liquids, gases, and
solids"