What did Erwin schrodiner discover ?

erwin discovered how to accurately calculate the energy levels of electrons in atoms

Explanation:

hope this helps.

In 1926, Erwin Schrödinger expressed a wave equation that explicitly determined the energy levels of electrons in atoms. All the time Erwin Schrödinger was alive, he persisted in his study and published various articles on a diversity of topics, including the difficulty of joining gravitation and electromagnetism.

it's filtration, but this is an assumption so my apologies if i got this