Abstract:
<p align="justify"> The present article discusses the contribution of Theodoro Augusto Ramos, A Brazilian mathematician, to the model of the atom. In a paper entitled "The Theory of Relativity and the Spectral Lines of Hydrogen", presented to the Brazilian Academy of Sciences in November 1923, Theodoro Ramos analyzed the fine spectra of the hydrogen atom using the principles of the general theory of relativity. His results represent an improvement of the Bohr-Sommerfeld model. </p>