25 déc. 1803 - Dalton's atomic theory: Created by John Dalton; Proposed the theory 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.
Ajouté au bande de temps:
Date:
25 déc. 1803
Maintenaint
~ Il y a 221 ans