Less than a year after this Heisenberg submitted his article on quantum mechanics which was to change the whole approach to the topic. Pauli, who before that had begun to feel that further advances could not be made with the theory as it then existed, quickly made progress using Heisenberg 's new ideas and before the end of 1925 he had derived the hydrogen spectrum from the new theory.
Mas mababa sa isang taon matapos na ito Heisenberg na isinumite sa kanyang artikulo sa quantum mechanics na kung saan ay upang baguhin ang buong diskarte sa paksa. Pauli, na bago na nagkaroon na sinimulan sa pakiramdam na higit pang pagsulong ay hindi ginawa sa theory na ito pagkatapos ay nabuhay, mabilis na ginawa gamit ang progreso Heisenberg 's bagong ideya at bago ang katapusan ng 1925 niya nagmula ang haydrodyen spectrum mula sa mga bagong teorya.