Stark effect : The splitting of spectral lines under the influence of electric field is called stark effect Raman Effect : When light of frequency v0 is scattered by molecules of a substance which have a vibrational frequency of v1 , the scattered light when analysed spectroscopically has lines of frequency v where v=v0±v0 Zeeman Effect : The splitting of spectral lines under the influence of magnetic field is called Zeeman effect Rutherford Effect : According to Rutherford on the bombordment of the atoms by high speed α particles, the centre of the atom scatteres the α-particles.