July 16, 1945, marked a turning point in history with the first nuclear test, named Trinity, in the New Mexico desert in the ...

As each uranium atom breaks apart, it shoots out neutrons ... water can employ a form of uranium commonly found in nature (U-238) rather than requiring so-called enriched uranium, which contains ...

As he bombarded a metal called uranium, he expected to create a slightly heavier nucleus, perhaps with 239 or 240 particles instead of its usual 238 ... up producing an atom half the size?

Water is made up of two hydrogen atoms and one oxygen atom, bonded together ... occurring isotopes - uranium-235, with 92 protons and 143 neutrons, and uranium-238, with 92 protons and 146 ...