apr 22, 1805 - John Dalton (Matter is made up by atoms)
Description:
Many experiments, which made him come up with the concept of the shape and weight of atoms, the elements are solid, hard, impenetrable and moveable objects, and that each element can be combined to make compounds as well as the model of the atom, ESAAO.Added to timeline:
Date:
apr 22, 1805
Now
~ 220 years ago