Raman effect
(ˈrɑːmən) n (General Physics) a change in wavelength of light that is scattered by electrons within a material. The effect is used in Raman spectroscopy for studying molecules
[C20: named after Sir Chandrasekhara Raman (1888–1970), Indian physicist]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014