This video explains absorption and emission spectra, continuous and discontinuous spectra, etc'. Hydrogen spectra are discussed in details, Rydberg formula is given. If you wanted to get a clear picture on spectra ,I request you to go through bohr model . The links are given below
Part 1
Postulates of Bohr Model
https://studio.youtube.com/video/VHbZE2AYi0A/edit
Part 2
Calculation of energy, velocity, and Bohr radius -equation derivation
https://studio.youtube.com/video/82vaiyf18NA/edit
