-
1913 BCE
Neils Bohr
Danish Scientins that created the model of electrons in orbit of the nucleus in a leveled way -
1909 BCE
Millikan
American Physist tht was able to determine the mass of eletrons. He also stated that all atoms have electrons and they all have a negative charge. -
1909 BCE
Ernest Ruderford
He was Thomsons student. He made an experiment and his result was a new model of the atom. The nucleus being a dense ball of mass and the electrons travel around it -
1897 BCE
J.J Thompson
British scientist who discover an error on Dalton's theory.
He discover that inside an atom their are even smaller particules inside of it. He discovered by the Cathode Ray Tub. He discover the Electron -
1803 BCE
Dalton's Atomic Theory
He is a British scientist who show that atoms could be combined with other atoms in specific proportions. -
384
Aristoteles
Greek philosopher who was against Democritous, he didnt believe that atom were indivisible -
440
Discovery of the atom
Greek philosopher, Democritus invent the word atom for all particules that are indivisible. He also proposed that every atom are small, hard and are made of only one kind of material.