In uranium-238, this turns the uranium atoms into atoms of plutonium-238.
Trace quantities are found in nature from neutron capture by uranium atoms.
It was clear too - and fortunate - that not all of the uranium atoms present in the experimental samples were being split.
To make heat, they split the uranium atoms, leaving fragments that are inherently unstable.
Even a uranium atom will have a wavelength of 2.2 meters at such a low temperature.
Nuclear energy originates from the splitting of uranium atoms in a process called fission.
Today we take energy from the fission of uranium atoms.
The uranium atom is the heaviest of all the naturally occurring elements.
Focus them at a cluster of uranium atoms.
When uranium atoms split, they give off a large amount of heat.