## BIG IDEAS - Joseph John Thomson (December 18, 1856 – August 30, 1940) - Credit with discovery of the electron. - Proposed the plum pudding model as a structure of the atom. - Also credit with finding evidence of the first isotope (1913). --- Return [[Home|Home]] | [[Notes Vault/Physics Notes Vault/Physics Skills/Physics|Physics]] | [[Physicists]] | [[Early Models of the Atom]] | [[Electrons]] | [[Isotopes]]