Who said that electrons can jump from a path in one level to another?

The concept of electrons jumping between energy levels in an atom is primarily associated with Niels Bohr, who developed the Bohr model of the atom in 1913. In this model, electrons occupy specific energy levels and can transition between these levels by absorbing or emitting energy, typically in the form of photons. This idea was crucial in explaining atomic spectra and the quantization of energy levels.