1 gen 1900 anni - J.J Thomson
Descrizione:
he discoved the electron, the negatively charged particle in the atom, by experimenting using cathode ray tubes which showed that all atoms contain tiny negatively charged subatomic particles or electrons. In 1904, Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged “soup”.Aggiunto al nastro di tempo:
Data:
1 gen 1900 anni
Adesso
~ 125 years ago