Question

What are anti stokes' lines?

Answer 1

anti stokes lines means against stokes

Answer 2

Explanation:

Anti-Stokes lines are observed in fluorescence and Raman spectra when the material's atoms or molecules are already excited as at high temperatures. The radiated line energy in this case is the sum of the energy of pre-excitation and the energy consumed from the exciting radiation.

Anti-Stokes lines are therefore always of shorter wavelength than the light that produces them. The difference between the emitted and absorbed light frequency or wavelength is called the Stokes change.