The total kinetic energy in elastic scattering is conserved, meaning that no energy is lost to other processes. The colliding particles remain intact. Rayleigh is elastic scattering .
The blue color of the sky is caused by the scattering of sunlight by the molecules of the atmosphere. This scattering, called Rayleigh scattering, is more effective at short wavelengths since blue colour has shorter wavelength and that's why the sky is blue.
The total kinetic energy in inelastic scattering is not conserved, meaning that energy is taken up by other processes In an inelastic scattering process, some of the energy of the incident particle is lost or increased . Example Raman scattering.
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