The electron in the hydrogen atom can move around the nucleus in a circular path of fixed radius and energy ... respectively. This expression is commonly known as Bohr’s frequency rule.

The muon is about 200 times heavier than the electron. The atomic Bohr radius is correspondingly about 200 times smaller in μp than in H. Effects of the finite size of the proton on the muonic S ...

The Golden ratio which appears in the geometry of a variety of creations in Nature is found to arise right in the Bohr radius of the hydrogen atom due to the opposite charges of the electron and ...