Experimental Validation of Schrodinger's Electron Cloud theory

I am currently doing a report for school on the electron cloud atomic structure theory. One of the major points on my report is the experiments performed by the scientists (Schrodinger and Heisenberg) to validate their hypothesis.


I cannot find any evidence of any experiments performed by them to validate their claim. Did they perform any experiments or was their theory purely based on mathematics? (There seems to be a lot of that surrounding this topic)


Thanks in advance, Sam.


