Niels Bohr's Nobel Lecture on December 11, 1922, titled The Structure of the Atom, is one of the most significant ...

Quantum chaos, previously theoretical, has been observed experimentally, validating a 40-year-old theory about electrons ...

Bohr suggested the revolutionary idea that electrons "jump" between energy levels (orbits) in a quantum fashion, that is, without ever existing in an in-between state. Thus when an atom absorbs or ...

Bohr suggested the revolutionary idea that electrons "jump" between energy levels (orbits) in a quantum fashion, that is, without ever existing in an in-between state. Thus when an atom absorbs or ...

An atom is made of tiny negatively charged electrons ... Changes to the atomic model Electrons move in fixed orbits, called electron shells, around the nucleus.