Where was the cloud model discovered?

The cloud model, which describes the behavior of electrons in an atom, was developed in the early 20th century, primarily by scientists like Erwin Schrödinger and Werner Heisenberg. It emerged from advancements in quantum mechanics and was not discovered in a single location but rather evolved through collaborative research in various scientific communities, particularly in Europe. The model emphasizes areas of probability where electrons are likely to be found, rather than fixed orbits, as suggested by earlier models.