Heavy water can help keep such a chain reaction going. As each uranium atom breaks apart, it shoots out neutrons that can go on to split other atoms. But the neutrons are much more likely to ...

They began to suspect that Fermi hadn't created a new element at all but might have actually split the uranium atom in two -- at that point a barely imaginable event. Before they could confirm ...

Every atom contains a lot of energy. And there are certain kinds of atom - like this stuff, uranium - which are unstable and can split. When they do, they release radiation and heat. The radiation ...

That’s the year he isolated “U-235,” the rare uranium isotope which has been utilized in the powerful atom bomb first used against Japan on Sunday. What Dr. Nier did was to isolate and concentrate the ...

Every atom contains a lot of energy. And there are certain kinds of atom - like this stuff, uranium - which are unstable and can split. When they do, they release radiation and heat. The radiation ...