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Erwin Schrödinger's Vienna

** Austrian currency (about $100).
** Photo from AIP Emilo Segre Archive.
** Bust at the Univ. of Vienna.

According to Heisenberg, Schrödinger completed his wave mechanics in 1926. These days, his name is associated with Schrödinger's cat and the entanglement. Here is an Wikipedia article on this subject.