15 ottob 1808 anni - John Dalton
Descrizione:
Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.Aggiunto al nastro di tempo:
Data:
15 ottob 1808 anni
Adesso
~ 217 years ago