1 feb 1897 anni - 1896 AD: Frederick Soddy, a radio-chemist who worked in nuclear chemistry studied the 1896 radioactivity phenomenon and he discovered after a chain of experiments that atoms could have the same chemical properties but can change those properties when it came to radioactivity. In 1913 Soddy claimed a new theory that atoms can have isotopes that change its weight.
Aggiunto al nastro di tempo:
Data:
1 feb 1897 anni
Adesso
~ 128 years ago