In simple terms, that assertion is correct, but for those with an expertise in the field, the longer answer to who did it ...

J.J. Thomson — a professor of experimental physics at the University of Cambridge, who in 1897 discovered the electron and in 1904 proposed a model of the atom — was the first person to be ...

There he met J.J. Thomson (who would soon discover the ... He discovered the atomic nucleus and developed a model of the atom that was similar to the solar system. Like planets, electrons orbited ...