Question

How does the process of absorption and re-emission work on the atomic level?

Answer 1

As the photons of light are absorbed by electrons, the electrons move into higher energy levels. This is the opposite process of emission. ... The amount of energy absorbedby the electron to move into a higher level is the same as the amount of energy released when returning to the original energylevel

Answer 2

Both emission and absorptiontechniques can be used to get the same information about the energylevels of an atom. The dark lines correspond to the frequencies of light that have been absorbed by the gas. As the photons of light are absorbedby electrons, the electrons move into higher energy levels.