13h 28min, jan 1, 1919 y - Ernest Rutherford
Description:
Succeeds in getting an a-particle (i.e., a helium nucleus) to react with a nitrogen nucleus to produce a proton (i.e., a hydrogen nucleus) and an oxygen nucleus. Rutherford has brought about the first human-engineered nuclear reaction. Also, this makes him the first person in history to change one element into another.Added to timeline:
Date:
13h 28min, jan 1, 1919 y
Now
~ 106 years ago