[linMcHlp]

I remember years of observing what was depicted: The electron circling the neucleus.

Then “professors” began to get quantum-ly excited - they could not wait to bash that model, and wreck its simplicity.

PS. Related hint/tip: We see, that which emits light.

[linMcHlp]

I also remember when I correctly spelled “nucleus”?

[Lonesome in Massachussets]

they could not wait to bash that model, and wreck its simplicity.

Bohr proposed the Bohr atom, as a tiny solar system. The problem is, in classical electrodynamics, the orbiting electron would quickly radiate all its kinetic energy and crash into the nucleus. The Bohr atom, with the electron artificially constrained to choose one of a number of discrete states explained the spectrum of radiation emitted by hydrogen atoms, but imposed arbitrary constraints.

Recall, that in the early days of the 20th Century, it was not universally accepted that matter even consisted of atoms, indivisible (not quite!) grains of matter. Thompson's 1904 plum pudding model of the atom was actually an advance! The Bohr model only barely and incompletely explained the Balmer Series of spectral lines. The closer one looks, the more inconsistencies one found.