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.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).