What does the spectra of atoms reveal?
The spectra of atoms give insights into the energy levels of the electrons in the atom. The atoms of every element have a unique spectra.
The identity of an atom can be determined by looking at its spectra.
Helium was first discovered by looking at the specters of the sun
The colors of the spectra show the energy levels of the electrons can move within the atom. Blue lines show large differences in energy levels occupied by the electrons. Red lines show small difference in energy levels. This gives insights into the energy levels that can be found in an atom