-
460-370 B.C.. Suggested that matter could not be infinitely divided. Coined the term atom.daild to find out what held atoms together.
-
384-322 B.C.. Disagreed with Democritus.completely denied the idea of the atom because of his personal beliefs
-
English schoolteacher that who marks the beginning of modern atomic theory. Belived atoms are the smaller particle.
-
Designed a series of CRT experiments at Cambridge. To determine the ratio of the partle charged to its mass. Concluded the mass of the particle was much smaller than that of the
-
Designed oil drop appersrus to determine the charge of the electron. Concluded it had a negative charge of -1.
-
Demonstrated that the necleus had a neutral sub atomic particle, the neutron. Won noble prize in 1935.
-
Studies how positively changed a-particle interacted with solid matter. He calculated that the atom was mostly just empty space.
