12 lugl 1922 anni - niels bohr
Descrizione:
Niels Bohr proposed a theory for the hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in prescribed orbits. When jumping from one orbit to another with lower energy, a light quantum is emitted.Aggiunto al nastro di tempo:
Data:
12 lugl 1922 anni
Adesso
~ 101 years ago
