Nuclear chain reaction (Experiment)
              Nuclear chain reaction
       
1933 AD - 1942 AD             
In nuclear physics, a nuclear chain reaction occurs when one single nuclear reaction causes an average of one or more subsequent nuclear reactions, thus leading to the possibility of a self-propagating series of these reactions.
The specific nuclear reaction may be the fission of heavy isotopes (e.g., uranium-235, 235U). A nuclear chain reaction releases energy.
 
  
  
  
  
  
  
  
 
 