a change in wavelength of light that is scattered by electrons within a material. The effect is used in Raman spectroscopy for studying molecules
Word origin
C20: named after Sir Chandrasekhara Raman (1888–1970), Indian physicist
Raman effect in American English
(ˈrɑːmən)
noun
Optics
the change in wavelength of light scattered while passing through a transparent medium, the collection of new wavelengths (Raman spectrum) being characteristic of the scattering medium and differing from the fluorescent spectrum in being much less intense and in being unrelated to an absorption band of the medium
Word origin
[1925–30; named after Sir C. raman]This word is first recorded in the period 1925–30. Other words that entered Englishat around the same time include: Nazi, decibel, payload, reflex camera, turnaround